Patch Testing

Patch testing is used to identify substances that may cause contact dermatitis. During the test, small patches containing potential allergens are applied to the skin, typically on the back, and left in place for 48 hours. After this period, the patches are removed, and the skin is examined for any reactions, which may indicate an allergy. You may then need to attend again after another 48 hours. You cannot shower or wet the area whilst the patches are in place and the test cannot be performed if there is not sufficient skin free of eczema where the patches can be applied. If you would like to arrange this then contact the secretaries of either Dr Ian White, Dr Sarah Wakelin or Dr David Orton directly. You can use this letter as a referral.

Dr Magnus Lynch

About Dr Magnus Lynch

MA(Cantab) DPhil(Oxon) MRCS FRCP

I am a London-based Consultant Dermatologist and Dermatological Surgeon. I am highly experienced in skin cancer diagnosis, Mohs micrographic surgery, acne, rosacea, acne scarring and laser treatments. 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. 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.

My NHS practice is at Guy's Hospital. I consult with private patients at OneWelbeck (near to Bond Street station) and on Harley Street. Book A Consultation.

Book Consultation

Enter your details and the practice management team will call you back within 2 working hours to arrange your appointment. Prefer to book yourself? Use instant online booking. Alternatively you can call or email directly.

Central London • Harley Street
Mon – Fri, 9am – 5pm

Request a Callback

★★★★★ 108+ verified patient reviews • Callback within 2 working hours

or
Book Online Instantly
Call Book Consultation