acne overview for patients

Overview

Acne is a very common skin condition that happens when the tiny openings in your skin, called pores, get blocked. Oil, dead skin cells, and bacteria build up inside, causing blackheads, whiteheads, pimples, or deeper painful bumps. It often appears on the face, forehead, chest, upper back, and shoulders.

Acne is the most common skin disorder in the world. It affects around 8 in 10 people at some point between the ages of 11 and 30, but it can also occur in adults in their 40s and 50s.

Acne most often appears during the teenage years as hormones become active. However, it can affect young children and adults too. People with a family history of acne are more likely to develop it, and women may have breakouts linked to their menstrual cycle, pregnancy, or menopause.

Symptoms

Common symptoms

• Blackheads — small, dark spots that look like tiny grey or black dots
• Whiteheads — small pimples with a white center
• Papules — small red, tender bumps
• Pustules — bumps with a white or yellow tip and red base
• Nodules and cysts — large, painful, deep lumps under the skin
• Oily skin that shines easily

Symptoms in children

• Teens may notice acne mainly on the face, forehead, nose, and chin, and sometimes on the back or chest. Breakouts can be mild or severe, and scars can develop if pimples are picked or squeezed.

Symptoms in older adults

• Adults often get acne on the lower cheeks, jawline, neck, and around the mouth. Hormone changes, stress, cosmetics, and some medicines can trigger or worsen breakouts.

Causes

Main causes

• Your skin produces too much oil, called sebum
• Dead skin cells shed quickly and clog the pores
• Bacteria that normally live on the skin multiply in the blocked pore
• The body's immune system causes inflammation, leading to red, swollen pimples

Risk factors

• Hormonal changes — such as puberty, menstrual periods, pregnancy, or conditions like PCOS
• Family history — acne often runs in families
• Stress — it can make breakouts worse
• Oil-based cosmetics and hair products
• Sweating or friction from helmets, tight collars, or backpacks

When to see a doctor

See a doctor urgently if:

• See a doctor the same day if you have acne with a high fever
• Speak with a healthcare provider urgently if acne is extremely painful or spreading very quickly

Book a routine appointment if:

• Make an appointment if over-the-counter skin products have not helped after 6–8 weeks
• See a doctor if you are concerned about scarring or dark marks
• Talk to a healthcare professional if acne is making you feel very anxious, avoid school or work, or affecting your mood

Diagnosis

A doctor or nurse can usually diagnose acne by simply looking at your skin. They may ask questions about your health history, home routines, medicines, and triggers.

Tests that may be done

• Typically no special tests are needed
• If a hormonal problem is suspected, the doctor may recommend a blood test
• In very rare cases, a tiny fluid sample may be taken from a large cyst to check for infection

What to expect at your appointment

The visit is usually quick. You will be asked about what you have tried so far. The healthcare provider may gently look at certain areas of your face, chest, back, and shoulders. Together, you will come up with a plan that is tailored to your skin type, the severity of the acne, and your preferences.

Treatment

Treatment for acne aims to reduce oil production, keep pores open, lessen bacteria, and lower inflammation. Your doctor may suggest one treatment or a combination. Expect to use a product for at least 6–12 weeks to see real benefit. Consistency matters more than using a stronger product every day.

Self-care at home

• Wash your face twice a day with a mild cleanser and lukewarm water
• Gently pat your skin dry — do not rub
• Choose cosmetics and sunscreens labelled as 'non-comedogenic' (do not clog pores)
• Avoid picking, popping, or squeezing pimples — this makes marks and scars worse
• Shampoo your hair regularly, especially if it is oily

Medical treatments

If acne is stubborn or scarring, a doctor can prescribe creams, gels, or lotions that you apply to the affected areas. Some treatments are taken as tablets or capsules. These work against inflammation, oil production, or bacteria. Procedures such as microdermabrasion, superficial chemical peels, laser and light therapy, or drainage of large cysts may also be offered by a dermatologist. Always follow your provider's instructions.

When is surgery considered?

Surgery is rarely used for acne. Occasionally, a dermatologist may drain a very large, painful cyst with a sterile needle. This is a simple in-office procedure that can bring quick relief. Scar revision procedures are a separate step and are only considered after acne is controlled.

Living with this condition

Living with acne can be emotionally and physically uncomfortable. Try to be gentle with your skin: touch your face as little as possible, wash after exercising, and follow the routine your healthcare team recommends. Keep a diary of foods, stress, and products that seem to trigger breakouts.

Lifestyle tips

• Manage stress through walking, deep breathing, hobbies, or social time
• Sleep at least 7–8 hours a night to let your skin repair
• Wash anything that touches your face — like pillowcases, headbands, and cell phone screens — regularly
• Avoid heavy, oily cosmetics, and always remove makeup before bed

Diet and exercise

There is no magic acne diet, but some people find that high-sugar foods or dairy products make their skin worse. Try to eat a balanced diet full of vegetables, fruits, lean proteins, and whole grains. Drink plenty of water. Exercise improves blood flow and can help your mood, but remember to shower and change out of sweaty clothes soon afterward.

Mental health and emotional wellbeing

Acne can affect self-esteem, social life, and mood. It is normal to feel upset or self-conscious. If you feel anxious, depressed, or have thoughts of harming yourself, please tell someone you trust and contact a crisis service right away.

Prevention

You cannot always prevent acne because hormones and genetics play a large role. But you can reduce breakouts by being consistent with your skincare routine, avoiding harsh scrubs and greasy products, never popping pimples, and treating new breakouts early.

Vaccines

There are no vaccines to prevent acne. A vaccine against certain bacteria is being studied, but it is not available to the public yet.

Screening programmes

There is no routine national screening for acne. However, if you suddenly develop acne as an adult for the first time, or if acne appears with other symptoms like excessive hair growth or irregular periods, it is worth seeing a healthcare professional to check for an underlying cause.

Complications

If left untreated

• Permanent scars — from deep acne or from picking spots
• Dark or light spots on the skin that may last for months
• Low self-esteem, anxiety, or depression
• Rarely, a deep infection can develop if a cyst becomes severely inflamed

Long-term outlook

With the right treatment and consistency, acne usually improves a great deal or clears completely. Many people find that it fades as they get older. There are also excellent treatments for acne scars. Remember, reaching out for support is a positive and brave step.

Find support

International organisations

• American Academy of Dermatology ↗

Local organisations

• NHS – UK National Health Service ↗ · United Kingdom

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