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Dr Koshy Johnson shares photos of common conditions that have presented in an unusual location or as a severe case

Alopecia areata of the chin – hairloss in a well-defined area

This is a less common site for alopecia areata. It is thought to be related to the immune system causing hairloss in a well-defined area. The commonest site is the scalp, but it can occur in the beard (as seen here) eyelashes and eyebrows. Exclamation-mark hairs may be seen around around the edge of enlarging areas. In most cases the hair grows back without intervention. Triamcinolone given intralesionally is the most effective way of triggering hair regrowth.

Strawberry naevus – capillary cavernous haemangioma

This infant had a large capillary haemangioma of her lip. This has gradually reduced in size. Ulceration may occur on haemangiomas located on the lips. If this occurs then usage of topical/ systemic antibiotics may be indicated and cleansing of the ulcer may be needed.

Severe impetigo of the face

This man had quite severe impetigo affecting his chin, nostrils and ear. Typical areas of exudation and yellowish crusting are seen. He was treated with mupirocin and systemic antibiotic. Common organisms for this condition are Staphylococcus aureus and Streptococcus pyogenes.

Koshy Johnson is a GP in Hull

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