Acne is often dismissed as a teenage skin problem that will eventually disappear on its own. But for many people, acne continues well beyond adolescence—or begins for the first time in adulthood.
A few occasional pimples may be manageable, but persistent blackheads, whiteheads, inflamed pimples, painful nodules or cystic acne can affect much more than appearance. Untreated or inadequately treated inflammatory acne can leave persistent pigmentation and permanent scars.
The good news is that acne is treatable.
Modern acne treatment is not simply about drying out pimples or repeatedly cleaning oily skin. Acne is a complex inflammatory disorder involving the hair follicle and sebaceous gland. Effective treatment depends on understanding the type, severity, distribution and possible triggers of acne before choosing therapy.
For people searching for the best acne treatment in Delhi, this detailed dermatologist guide explains why acne develops, different types of acne, teenage and adult acne, hormonal acne, medicines, chemical peels, procedures, acne scars, skincare and how an individualised treatment plan is developed.
What Is Acne?
Acne vulgaris is a common inflammatory skin condition involving the pilosebaceous unit—the hair follicle and its associated oil-producing sebaceous gland.
Acne commonly affects areas containing a high concentration of sebaceous glands, including the:
- face
- forehead
- nose
- cheeks
- chin
- jawline
- neck
- chest
- shoulders
- upper back
Depending on its severity, acne may appear as:
- blackheads
- whiteheads
- red bumps
- pus-filled pimples
- deeper nodules
- painful cyst-like lesions
Different types of acne can occur simultaneously.
A patient may therefore have clogged pores, inflamed pimples and deeper nodules at the same time.
How Does Acne Develop?
One of the most persistent myths about acne is that pores simply become filled with “dirt.”
The actual process is more complex.
Four important biological factors are involved in acne development:
- Excess Sebum Production
Sebaceous glands produce sebum, an oily substance that helps protect the skin.
Hormonal activity can stimulate these glands to produce more sebum, particularly during puberty and in some forms of adult acne.
- Abnormal Follicular Keratinisation
Dead skin cells can accumulate within a hair follicle instead of shedding normally.
Together with sebum, this can form a microscopic blockage that eventually develops into a comedone.
- Cutibacterium acnes
A bacterium known as Cutibacterium acnes—previously called Propionibacterium acnes—normally lives on human skin.
Changes within a blocked, sebum-rich follicle can contribute to an environment in which this bacterium participates in acne-related inflammation.
This is why acne should not simply be described as a bacterial infection.
- Inflammation
Inflammatory pathways play a major role in acne.
As inflammation increases, lesions can become red, swollen, tender and deeper.
Understanding these mechanisms explains why effective acne treatment frequently combines therapies that address different aspects of the disease.
What Are the Different Types of Acne?
Acne is not identical in every patient.
Recognising the predominant lesion type helps determine treatment.
Comedonal Acne
This mainly consists of:
- blackheads
- whiteheads
- clogged pores
Blackheads are not black because the pore contains dirt. The dark appearance results from material within the open comedone being exposed to air.
Inflammatory Acne
Inflamed acne can include:
- papules
- pustules
- red tender pimples
Nodular or Severe Acne
Deeper inflammation can produce larger, painful nodules.
This form of acne has a greater potential to leave permanent scarring and requires timely dermatological assessment.
Cystic Acne
The term cystic acne is commonly used for severe, deep, painful acne lesions.
Patients with recurrent painful nodules should not rely solely on over-the-counter face washes or spot treatments.
Hormonal Acne
Hormonal influences can contribute to acne in both adolescence and adulthood.
In adult women, persistent or recurrent breakouts involving the lower face, chin and jawline can sometimes suggest a hormonal component.
Acne Mechanica
Friction, pressure, sweating and occlusion may aggravate acne in certain situations.
Helmets, tight clothing and other sources of repeated friction can contribute in susceptible individuals.
What Causes Acne?
Acne rarely has one single cause.
Factors that may contribute include:
- hormonal changes
- genetic susceptibility
- increased sebum production
- follicular blockage
- inflammatory activity
- certain medications
- occlusive skin or hair products
- friction and sweating
- some occupational exposures
Stress may also worsen acne in some people, although stress itself should not be presented as the sole cause of the condition.
Does Poor Hygiene Cause Acne?
No.
Acne is not evidence that someone has a dirty face.
Excessively washing, scrubbing or exfoliating acne-prone skin can actually damage the skin barrier and increase irritation.
A gentle cleansing routine is usually preferable to repeatedly trying to “scrub away” acne.
Can Pollution Cause Acne?
Environmental factors can potentially influence skin inflammation and barrier function, but acne is a multifactorial condition.
Living in Delhi does not mean pollution is the sole explanation for someone’s acne.
A dermatologist should still evaluate the type and severity of acne and other contributing factors.
Can Diet Cause Acne?
The relationship between diet and acne is more nuanced than claims such as “chocolate causes pimples.”
Research has investigated associations between acne and dietary patterns, including high-glycaemic diets and certain dairy exposures.
However, food is not the sole cause of acne, and restrictive diets should not replace appropriate dermatological treatment.
Rather than eliminating multiple foods without evidence, patients should focus on an overall balanced diet and discuss consistent food-related patterns with their doctor.
Teenage Acne: Should You Wait for It to Go Away?
Acne is extremely common during adolescence because hormonal changes can stimulate sebaceous glands.
But “common” does not mean it should always be ignored.
Early treatment becomes particularly important when acne is:
- persistent
- inflammatory
- painful
- worsening
- causing pigmentation
- beginning to scar
- affecting confidence or emotional wellbeing
Waiting for severe inflammatory acne to disappear naturally can allow avoidable scarring to develop.
What Is Adult Acne?
Acne can continue after adolescence or begin for the first time during adulthood.
This is often referred to as adult acne.
Adult women commonly seek treatment for persistent breakouts around the:
- chin
- jawline
- lower cheeks
- neck
But distribution alone does not establish the cause.
Treatment should consider medical history, menstrual pattern, medications, skincare and other symptoms where relevant.
What Is Hormonal Acne in Women?
Hormones, particularly androgen-related activity, can influence sebaceous glands and acne.
A hormonal contribution may be considered in women with features such as:
- persistent lower-face acne
- jawline breakouts
- predictable premenstrual flares
- adult-onset acne
- recurrent acne despite conventional topical treatment
If acne occurs alongside symptoms such as irregular periods or excessive facial/body hair, further medical assessment may be appropriate.
However, not every jawline pimple means a patient has a hormonal disorder.
PCOS and Acne
Polycystic ovary syndrome (PCOS) can be associated with acne in some women.
Other possible features can include:
- irregular menstrual cycles
- excessive facial or body hair
- scalp hair thinning
- difficulty with ovulation
- metabolic abnormalities
Acne alone cannot diagnose PCOS.
When the clinical history suggests an underlying hormonal disorder, appropriate evaluation may be advised.
Why Does Acne Get Worse Before Periods?
Hormonal fluctuations across the menstrual cycle can influence sebaceous activity and inflammation.
Some women therefore notice predictable acne flares before menstruation.
When this pattern is persistent, a dermatologist may consider whether hormonal treatment has an appropriate role.
When Should You See a Dermatologist for Acne?
You do not have to wait until acne becomes severe.
Consider dermatological assessment when:
- acne persists despite basic skincare
- breakouts are becoming more frequent
- lesions are painful
- nodules or deep lesions develop
- acne is leaving dark marks
- scarring has started
- acne affects the chest or back extensively
- adult acne appears suddenly or persistently
- over-the-counter products are causing irritation
- acne affects confidence or emotional wellbeing
The earlier acne is adequately controlled, the better the opportunity to reduce ongoing inflammation and prevent avoidable scarring.
Best Acne Treatment in Delhi: How Is Treatment Selected?
There is no single best acne treatment for every patient.
Treatment depends on:
- acne type
- severity
- lesion distribution
- age
- skin sensitivity
- pigmentation tendency
- previous treatments
- scarring risk
- pregnancy potential
- hormonal factors
- other medical conditions
This is why copying another person’s skincare prescription can be ineffective or unsafe.
A dermatologist may use one treatment or combine multiple approaches.
- Topical Retinoids
Topical retinoids are among the important evidence-based treatments for acne.
They help normalise follicular cell turnover and reduce the formation of clogged pores.
Depending on the individual, they can be useful for:
- blackheads
- whiteheads
- inflammatory acne
- prevention of new lesions
- maintenance after acne improves
Examples include adapalene, tretinoin and other prescription retinoids.
Retinoids can initially cause:
- dryness
- irritation
- peeling
- sensitivity
The formulation and frequency therefore need to be matched to skin tolerance.
Certain retinoids also require specific precautions in pregnancy, making medical guidance important.
- Benzoyl Peroxide
Benzoyl peroxide is an established acne treatment.
It has antimicrobial and anti-inflammatory activity and is frequently used in combination with other therapies.
It may be particularly useful alongside antibiotic treatment because it can help reduce the risk of bacterial resistance.
Higher concentration is not automatically better.
An appropriate strength should balance effectiveness with skin tolerance.
- Azelaic Acid
Azelaic acid can have a role in acne treatment because it has anti-inflammatory and comedolytic properties.
It can be particularly useful when acne coexists with post-inflammatory hyperpigmentation, depending on the patient.
It may also be considered in selected situations where other active ingredients are poorly tolerated.
- Salicylic Acid
Salicylic acid is a beta-hydroxy acid with keratolytic properties.
It can help reduce follicular congestion and is commonly found in acne cleansers and topical products.
However, using multiple salicylic-acid products simultaneously or combining several strong exfoliants can irritate the skin.
More exfoliation does not necessarily mean faster acne clearance.
- Topical Antibiotics
Topical antibiotics may be incorporated into selected acne treatment plans.
However, antibiotic resistance is an important concern.
They should not be repeatedly or indefinitely used as standalone acne treatments without appropriate medical guidance.
Current evidence-based acne management emphasises combining antibiotic therapy appropriately with treatments such as benzoyl peroxide when antibiotics are indicated.
- Oral Antibiotics
Moderate-to-severe inflammatory acne may sometimes require an oral antibiotic.
Examples used in acne management include certain tetracycline-class antibiotics.
Their purpose includes reducing inflammation and acne-associated bacterial activity.
However, oral antibiotics should generally be used for a limited duration rather than becoming a long-term maintenance treatment.
They should also be incorporated into a broader acne regimen rather than used as the only treatment.
This approach is important both for effectiveness and antibiotic stewardship.
- Hormonal Treatment for Acne
Hormonal therapy can be useful for appropriately selected women with acne.
Options may include:
Combined Oral Contraceptives
Certain combined oral contraceptives can improve acne in appropriate female patients.
They are not suitable for everyone, so medical history and contraindications must be assessed before prescribing them.
Spironolactone
Spironolactone can be considered for selected women with persistent or hormonally influenced acne.
It is a prescription medicine and requires appropriate medical assessment.
Hormonal treatment should not be started simply because acne happens to occur on the jawline.
- Oral Isotretinoin for Severe Acne
Isotretinoin can be highly effective for severe acne.
It may be considered particularly for:
- severe nodular acne
- acne at significant risk of permanent scarring
- acne that has not responded adequately to appropriate conventional treatment
- selected cases causing substantial ongoing disease burden
Isotretinoin is a prescription medication requiring careful medical supervision.
Potential adverse effects, laboratory monitoring where appropriate, pregnancy prevention requirements and other safety considerations should be discussed in detail before treatment.
It should never be self-prescribed or taken from someone else’s prescription.
Is Isotretinoin a Permanent Cure for Acne?
Isotretinoin can produce prolonged remission in many patients, but it should not be advertised as a guaranteed permanent cure.
Some people can experience recurrence and may require maintenance treatment or further management.
The aim is effective long-term disease control while balancing treatment benefits and risks.
Procedures for Acne: What Actually Helps?
Patients often search for advanced acne treatment in Delhi expecting a laser or machine-based procedure to be the most effective option.
However, current evidence-based acne management is primarily built around appropriate topical and systemic therapies.
Procedures may have an adjunctive role in selected cases, but they should not automatically replace established medical treatment.
Chemical Peels for Acne
Chemical peels may be used by dermatologists in selected patients.
Agents can include:
- salicylic acid
- glycolic acid
- other carefully selected peeling formulations
Depending on the patient, peels may help with:
- comedonal acne
- oily or congested skin
- superficial post-acne pigmentation
- selected textural concerns
But chemical peels should be considered an adjunct rather than a universal cure for acne.
The American Academy of Dermatology’s updated acne guidance notes that available evidence was insufficient to formulate a recommendation for procedures such as chemical peels as routine acne therapy.
Laser and Light-Based Treatment for Active Acne
Laser, LED and other light-based treatments are heavily promoted for acne.
Some patients may be considered for specific device-based approaches, but current evidence does not support describing laser treatment as universally superior to standard medical acne therapy.
The AAD’s updated guidelines found insufficient evidence to formulate recommendations for routine use of laser and light-based devices for acne.
Therefore, statements such as “laser permanently cures acne” should be treated cautiously.
A device should be recommended because it has a meaningful role for that particular patient—not because a clinic owns the machine.
Comedone Extraction
Blackheads and selected whiteheads may sometimes be professionally extracted using appropriate technique.
Patients should avoid repeatedly squeezing lesions themselves.
Home extraction can cause:
- inflammation
- skin injury
- pigmentation
- infection
- scarring
Professional extraction can sometimes complement medical acne management but does not address all biological drivers of acne.
Intralesional Treatment for Large Painful Lesions
Selected large, painful inflammatory lesions can sometimes be treated with intralesional corticosteroid injections by a dermatologist.
This can help reduce inflammation relatively quickly in appropriate situations.
It is not a routine injection for every pimple.
Acne Treatment vs Acne Scar Treatment: They Are Not the Same
This distinction is crucial.
Active acne treatment aims to stop new lesions.
Acne scar treatment aims to improve damage that has already occurred.
Trying to aggressively treat scars while acne is still uncontrolled can lead to repeated cycles of new scarring.
Therefore, the typical priority is:
Control active acne → maintain acne control → assess residual pigmentation and scars → plan scar treatment.
What Are Acne Marks?
Flat red, pink, brown or dark areas remaining after a pimple may represent post-inflammatory colour change rather than a true scar.
In Indian skin, post-inflammatory hyperpigmentation can be particularly prominent.
Treatment can include:
- appropriate acne control
- sunscreen
- topical retinoids where appropriate
- azelaic acid
- other pigment-directed treatment
- selected procedures
What Are True Acne Scars?
True acne scars involve structural changes in the skin.
Common atrophic scar patterns include:
Ice-Pick Scars
Deep, narrow scars extending into the skin.
Boxcar Scars
Broader depressions with relatively defined edges.
Rolling Scars
Wider depressions associated with tethering beneath the skin.
Hypertrophic or Keloid Scars
Raised scars resulting from excess scar tissue.
Because different scar types have different structures, there is no single best procedure for every acne scar.
Acne Scar Treatment Options
Depending on scar type, depth, skin type and pigmentation tendency, treatment may involve:
- subcision
- TCA CROSS
- microneedling
- RF microneedling
- fractional laser
- selected resurfacing procedures
- scar-specific injections
- combination treatment
A patient with rolling scars may require a very different strategy from someone with predominantly ice-pick scars.
This is why acne scar treatment should be scar-specific rather than machine-specific.
Acne Treatment for Indian Skin
Indian skin deserves careful treatment planning because post-inflammatory pigmentation can be a major concern.
Inflammation from acne itself can create dark marks.
But overly aggressive treatment can also cause irritation and pigmentation.
Treatment therefore needs to balance:
acne control + skin-barrier protection + pigmentation prevention + scar prevention.
Patients should avoid frequently changing active ingredients or combining several strong products without guidance.
A Simple Dermatologist-Recommended Acne Skincare Approach
The exact routine should be personalised, but the basic philosophy is usually simple.
Morning
Gentle cleanser
Remove excess oil without aggressively stripping the skin.
Prescribed acne treatment
Use according to the dermatologist’s instructions.
Non-comedogenic moisturiser
Acne-prone skin can still require moisturisation.
Broad-spectrum sunscreen
Particularly important when acne leaves pigmentation or when treatments increase sun sensitivity.
Evening
Gentle cleanser
Remove sunscreen, makeup and surface impurities.
Prescription treatment
This may include a retinoid or another acne medication depending on the treatment plan.
Moisturiser
Helps maintain skin-barrier tolerance.
More products do not necessarily mean better results.
Common Acne Mistakes to Avoid
Popping Pimples
Squeezing inflammatory acne can worsen inflammation and increase the risk of pigmentation and scarring.
Scrubbing the Face
Acne is inside the pilosebaceous unit. It cannot simply be scrubbed away.
Washing the Face Repeatedly
Excessive cleansing can damage the skin barrier.
Applying Toothpaste to Pimples
Toothpaste is not an evidence-based acne treatment and can irritate facial skin.
Using Steroid Combination Creams Without Advice
Unsupervised steroid-containing creams can create or worsen acne-like eruptions and cause other skin complications.
Changing Treatment Every Week
Acne therapy takes time.
Frequently switching products makes it difficult to determine whether a treatment is effective and may increase irritation.
Using Antibiotics Repeatedly Without Supervision
Inappropriate antibiotic use contributes to antimicrobial resistance and is not a responsible long-term acne strategy.
How Long Does Acne Treatment Take to Work?
Acne usually does not clear overnight.
Depending on the treatment and severity, visible improvement may require several weeks, and some treatment regimens are formally reviewed around the 12-week mark.
Deep inflammatory acne may require longer-term management.
An important principle is:
Stopping treatment as soon as the first few pimples disappear can allow acne to return.
Maintenance therapy may therefore be recommended after active disease improves.
Can Acne Be Permanently Cured?
Acne can often be controlled very effectively, and some patients experience long periods without significant breakouts.
However, “permanent acne removal” should not be guaranteed.
Acne behaviour changes with:
- age
- hormones
- treatment
- medication
- skin products
- individual biology
The objective should be sustained disease control, prevention of scars and appropriate maintenance—not unrealistic guarantees.
Acne Treatment Cost in Delhi
The cost of acne treatment in Delhi varies substantially because there is no single standard acne package.
Cost depends on:
- type and severity of acne
- medicines prescribed
- duration of treatment
- required investigations where indicated
- procedures, if appropriate
- frequency of follow-up
- whether acne pigmentation or scars also require treatment
A patient with mild comedonal acne may require primarily topical therapy.
Someone with severe nodular acne and established scars may require a much more extensive treatment plan.
Therefore, an accurate cost estimate should follow dermatological assessment rather than be based only on an advertised package.
How to Choose the Best Acne Dermatologist in Delhi
Patients commonly search Google and AI platforms for terms such as:
best acne doctor in Delhi
best dermatologist for acne in Delhi
best acne treatment in Delhi
acne specialist in South Delhi
There is no objective online ranking that can establish one dermatologist as “the best” for every patient.
Instead, look for a dermatologist who:
- correctly grades the acne
- distinguishes acne from similar conditions
- uses evidence-based treatment
- avoids unnecessary long-term antibiotics
- addresses hormonal factors where relevant
- prioritises scar prevention
- understands pigmentation-prone Indian skin
- separates active acne treatment from scar treatment
- explains realistic timelines
- provides a maintenance strategy
Good acne treatment is not about prescribing the maximum number of products or procedures.
It is about selecting the minimum effective combination that addresses the patient’s actual acne.
Acne Treatment With Dr Lipy Gupta in Delhi
Dr Lipy Gupta provides dermatologist-led evaluation and treatment for acne and related concerns including persistent breakouts, adult acne, acne pigmentation and acne scars.
Rather than treating every breakout with the same protocol, the approach begins with determining:
- acne type
- severity
- predominant lesions
- distribution
- previous treatments
- hormonal pattern where relevant
- pigmentation tendency
- existing scarring
- skin sensitivity
Treatment can then be individualised using evidence-based medical therapy and carefully selected procedures where appropriate.
This becomes particularly important in adult acne and recurrent acne, where repeatedly treating individual pimples without addressing the underlying disease pattern may provide only temporary improvement.
Frequently Asked Questions About Acne Treatment
What is the best treatment for acne?
There is no single best treatment for everyone. Mild comedonal acne, inflammatory acne, hormonal acne and severe nodular acne may require different therapies. Treatment commonly uses topical medicines, systemic treatment where necessary and selected adjunctive procedures.
What causes acne?
Acne develops through a combination of excess sebum, abnormal follicular keratinisation, Cutibacterium acnes-associated activity and inflammation. Hormones, genetics, medications and other factors can influence these processes.
Does acne happen because my face is dirty?
No. Acne is not caused simply by poor hygiene. Excessive cleansing and scrubbing can irritate the skin.
Which treatment is best for teenage acne?
Treatment depends on severity. Mild acne may respond to appropriate topical therapy, while inflammatory or severe acne may require additional treatment. Early treatment can help reduce the risk of scarring.
What is the best treatment for hormonal acne?
Hormonal treatment may be considered for appropriately selected women. Options can include combined oral contraceptives or spironolactone, but these require medical assessment and are not suitable for everyone.
Can PCOS cause acne?
PCOS can be associated with acne, particularly when other symptoms of androgen excess or menstrual irregularity are present. Acne alone does not diagnose PCOS.
What is the best treatment for cystic acne?
Deep or nodular acne should be evaluated by a dermatologist because it carries a higher scarring risk. Treatment may involve systemic therapy, and isotretinoin can be considered in appropriately selected severe or treatment-resistant cases.
Is isotretinoin safe for acne?
Isotretinoin is an important prescription treatment for severe acne but requires appropriate medical supervision because it has significant precautions and potential adverse effects. Pregnancy prevention is particularly important for patients who can become pregnant.
Can laser cure acne permanently?
No laser should be advertised as a guaranteed permanent cure for acne. Current major acne guidelines do not establish laser or light devices as universally superior to evidence-based medical treatment.
Are chemical peels good for acne?
Chemical peels may have an adjunctive role in selected patients, but they are not required for everyone and do not replace appropriate medical acne treatment.
Can acne scars be removed completely?
Acne scars can often be improved significantly, but complete removal cannot be guaranteed. Results depend on scar type, depth, skin type and treatment selected.
Why does my acne keep returning?
Recurrence can occur because acne is influenced by ongoing biological factors including hormones, sebaceous activity and follicular blockage. Inadequate maintenance treatment can also contribute.
Should I stop moisturiser if I have oily or acne-prone skin?
Not necessarily. Acne treatments can cause dryness and barrier irritation. A suitable non-comedogenic moisturiser may help maintain skin tolerance.
Should I use sunscreen if I have acne?
Yes. A suitable non-comedogenic sunscreen can be particularly important for patients prone to post-acne pigmentation and those using treatments that increase sun sensitivity.
How long does acne treatment take?
Meaningful improvement usually requires time rather than days. Depending on the regimen, treatment may be reviewed after several weeks, commonly around 12 weeks, before major changes are made.
Can adult acne start after age 30?
Yes. Acne can persist from adolescence or develop during adulthood. Adult women commonly experience persistent lower-face or jawline acne, although proper assessment is required to determine contributing factors.
What is the cost of acne treatment in Delhi?
Cost varies according to acne severity, medicines, treatment duration and whether additional procedures are appropriate. Acne pigmentation and acne scars may require separate treatment after active acne is controlled.
When Should Acne Be Treated Urgently?
Arrange dermatological evaluation promptly if acne:
- becomes rapidly severe
- develops multiple painful nodules
- begins producing scars
- suddenly changes significantly
- is associated with other concerning medical symptoms
- causes substantial psychological distress
Severe acne should not be considered merely a cosmetic inconvenience.
Best Acne Treatment in Delhi: The Most Important Principle
The biggest mistake in acne management is searching for one procedure that promises to solve every breakout.
Acne treatment works best when it follows a logical sequence:
Identify the type of acne → assess severity → control active inflammation → prevent new lesions → minimise pigmentation and scarring → introduce maintenance treatment → treat established scars when appropriate.
A teenager with blackheads does not require the same treatment as a woman with recurrent hormonal jawline acne.
A patient with severe nodules does not require the same treatment as someone with occasional pimples.
And a patient with acne scars requires a different strategy from someone who still has uncontrolled active acne.
For this reason, the best acne treatment is not necessarily the most expensive procedure or newest technology.
It is the treatment that correctly addresses the type and severity of acne while protecting the skin from unnecessary irritation, pigmentation and permanent scarring.
For patients looking for an acne dermatologist in Delhi, acne treatment in South Delhi, or treatment for adult acne, hormonal acne and acne scars, dermatologist-led assessment can help build a treatment plan around the skin rather than around a generic acne package.
Control acne early. Prevent scars where possible. Treat the skin—not just the pimple.
Medical Disclaimer: This content is intended for general educational purposes and does not replace an individual consultation, diagnosis or prescription from a qualified dermatologist. Prescription medicines including antibiotics, hormonal therapies and isotretinoin have specific indications, contraindications and safety requirements and should only be used under appropriate medical supervision.