Search our A to Z of Skin to find out more about common skin conditions and problems, their symptoms, causes and how they are diagnosed and treated. You can search by both common and medical names, or by medicine or treatment name.

Both common and medical names have been included to help your search, as well as the names of medications and treatments. There are also a number of cosmetic topics which explain the latest treatments for cosmetic concerns related to the skin. Our thanks go to the many College dermatologists have contributed to the information on this site.

The information provided in the A-Z of Skin is a general guide only and does not replace individual medical advice. Please speak to your doctor for advice about your situation. The ACD is not liable for any consequences arising from relying on this information.

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  • Gianotti-Crosti Syndrome

    Also known as ... Papular Acrodermatitis of Childhood Gianotti-Crosti syndrome is the name given to a rash which is caused by a viral infection. It is typically found on the legs, buttocks, arms and face of children aged 6 months to 14 years. The condition usually clears spontaneously and without treatment over a period of 12 weeks.

  • Glucagonoma Syndrome

  • Gomm-Button Disease

    Gomm-Button Disease also known as Sweet’s syndrome is an uncommon condition named after the English dermatologist, Dr Robert Sweet, who first described it in 1964. Sweet’s syndrome usually presents with fever, a rise in white blood cells, raised red skin rashes and neutrophils (pus cells) infiltrating the upper layer of the skin. Fever and a rise in white blood cells are not always present. Sweet’s syndrome is sometimes initially mistaken for an infection or medication allergy.

  • Graft Versus Host Disease

    Graft versus host disease (GVHD) is a condition which occurs after transplants, usually haematopoietic stem cell transplants but occasionally also solid organ transplants. As suggested by its name, it refers to when the “graft” (donor’s cells) attack the “host” (graft recipient’s cells). When the host attacks the graft is called “rejection of the graft”.

  • Granuloma Annulare

    Granuloma Annulare is a harmless skin condition. Localised Granuloma Annulare more commonly occurs over bony prominences. Although it commonly resolves on its own within a few months to few years, most people seek treatment at an earlier stage for cosmetic reasons or because of skin irritation associated with the condition.

  • Granuloma Faciale

    Granuloma Faciale is a rare benign skin condition, characterised by single or multiple erythematous (red) papules, plaques or nodules. This condition is more common in males and, as the name suggests, most frequently affects facial areas.

  • Granulomatous Cheilitis

    Also known as ... Cheilitis Granulomatosa, Miescher’s Cheilitis Granulomatous cheilitis is a rare condition characterised by persistent, diffuse, soft-to-firm swelling of one or both lips.

  • Grönblad–Strandberg Syndrome