What is acne?

By Dr Magnus Lynch
MA(Cantab) DPhil(Oxon) MRCS FRCP
Consultant Dermatologist & Dermatological Surgeon

Acne is a very common condition that will affect most of us at some time in our lives. It is often mild and does not require any treatment, however it can be disfiguring with significant psychological and social consequences. The good news is that in almost all cases even severe acne can be effectively treated.

The causes of acne are complex and multifactorial, however fundamentally acne results from blockage of the hair follicle - a blind-ended tunnel within which the hair grows. At the top of the follicle, close to the skin surface, a gland known as a sebaceous gland secretes sebum into each hair follicle. The lining of the hair follicle is made from modified skin cells that are shed through the opening of the follicle at the skin surface. The earliest abnormality in acne is an accumulation of dead skin cells within the opening of the hair follicle. Subsequent blockage of the follicle results in different types of acne lesions like whiteheads, blackheads, and acne spots.

Related Articles

• What causes acne?
• What are the different types of acne lesions?
• How is acne classified?
• How do you know what the right treatment is for your acne?

About Dr Magnus Lynch

I am a London-based Consultant Dermatologist and Dermatological Surgeon. My NHS practice is at Guy's Hospital and is focused on Mohs micrographic surgery and the treatment of complex skin cancers. My private practice additionally focuses on laser treatments, regenerative dermatology, rosacea, acne, pigmentation and scarring. I have particular expertise in the diagnosis and treatment of skin cancer, including minimally-invasive techniques, Mohs micrographic surgery, and facial reconstructive surgery. I studied at the Universities of Cambridge and Oxford, and completed my dermatology training and Mohs fellowship at the prestigious St John’s Institute of Dermatology. I graduated from medical school in 2003 and have worked exclusively in Dermatology since 2012.

I lead a research team at King’s College London investigating the molecular biology of skin cancer and skin cancer diagnostics, and I constantly aim to translate the latest findings into better patient care. You can learn more about my Research.

In recent years I have been involved in Media Appearances, including the Channel 5 series 'Skin A&E', where I perform skin surgeries and treat various skin conditions. Filming for the next series has recently completed and the series will be released later in 2025.

How I can help

I consult with private patients at several well-appointed and conveniently located sites across central London:

• London Bridge Hospital: Conveniently situated within The Shard, next to London Bridge station.
• Skin55 Ltd: Located at 55 Harley Street, this beautiful Edwardian building houses one of the largest private dermatology facilities in the UK with a comprehensive laser suite.
• OneWelbeck: Located close to Bond Street underground station. Mohs surgery, lasers, and other skin surgeries are performed in the state-of-the-art surgical suite here.

A new consultation is £250, a follow up consultation is £220. For more information on fees, please visit Prices.