What causes acne?
Acne develops when increased oil gland activity, pores blocked by keratin, growth of skin bacteria and inflammation come together. Genetic tendency and hormonal changes contribute.
Hormones stimulate oil glands at puberty, but acne also occurs in adulthood. The menstrual cycle, hormonal conditions such as polycystic ovary syndrome, some medicines and stress can trigger flares. The effect of diet varies between people, and the scientific evidence for particular foods is limited.
Squeezing a spot can drive inflammation deeper and raises the chance of scarring. Making a plan with a doctor is safer than picking.
Are there different types of acne, and does it matter?
Blackheads and whiteheads are comedonal acne, red bumps and pustules are inflammatory, and deep painful lumps are nodular or cystic acne. Treatment differs by type.
Comedonal acne is usually managed with topical products. Inflammatory acne may call for topical or oral antibacterial treatment. Cystic acne tends to scar, so early medical assessment matters.
In women, acne that flares around the jawline with the cycle may suggest a hormonal component, and the doctor may request further evaluation.
Which treatment options are used?
Options include topical retinoids, antibacterial products, azelaic acid, doctor-supervised oral medicines, chemical peels and some light or laser methods. The doctor decides which is suitable.
Topical retinoids target pore blockage but can cause dryness and irritation, and they are not used in pregnancy. For severe or resistant cases the doctor may consider a strong drug such as isotretinoin, which needs close monitoring, blood tests and pregnancy prevention and must never be used without supervision.
Superficial peels and some device treatments may support care, but can be postponed during active inflammation or depending on skin condition and medicines. During and for a period after isotretinoin, certain procedures are avoided; the doctor sets the interval.
What matters in home care?
A gentle cleanser, a light non-greasy moisturiser and a daily sunscreen are usually a sufficient start. Over-cleansing and many active ingredients at once can irritate skin.
Gentle cleansing twice a day is usually enough; washing more often weakens the barrier and does not settle oil production. Choosing make-up and sunscreens labelled as non-comedogenic may help.
When starting a new active product, testing a small area and using it infrequently at first is sensible for tolerance. If you are on prescribed treatment, discuss extra products with your doctor.
When should I see a dermatologist?
Painful cysts, spots that scar, acne lasting months despite products, sudden severe acne, or acne with irregular periods and excess hair growth all need assessment.
Early and appropriate treatment may lower the risk of scarring. Once scars form, options for acne scars need a separate assessment.
If there is fever, marked facial swelling or widespread sore-looking skin, seek care without delay.
Frequently asked questions
How long does acne take to clear?
It varies with the person and the treatment. Effects usually appear over weeks to months, and regular follow-up is needed.
Is popping spots harmful?
It can be. It may spread inflammation deeper and increase the risk of marks and scars.
Can a peel be used for acne?
In some cases it may support treatment. The doctor decides according to inflammation, skin sensitivity and current medicines.
Can I have aesthetic procedures while on isotretinoin?
Many procedures are postponed during and after it. The interval depends on the doctor; always say if you take it.
Does acne treatment change in pregnancy?
Yes. Many medicines are unsuitable in pregnancy and breastfeeding, so a doctor must be consulted.
Sources (4)
- American Academy of Dermatology (JAAD): Guidelines of care for the management of acne vulgaris (2024)
- European Dermatology Forum (JEADV): European evidence-based (S3) guideline for the treatment of acne – update 2016 – short version (2016)
- American Academy of Dermatology: Acne Resource Center
- Türk Dermatoloji Derneği, Akne Çalışma Grubu: AKNE (Ergenlik sivilcesi) – 26 Mart 2019 Ulusal Akne Günü (2019)
This content is for general information and does not replace a personal medical assessment.