Acne conglobata
Acne conglobata is a chronic and severe form of acne vulgaris (common acne). It is usually characterized by deep abscesses, severe inflammation, severe damage to the skin and scarring. Blackheads are usually conspicuous and widespread. It often appears on the face, chest, back, thighs, upper arms and buttocks. It usually affects people between the ages of 18 and 30.
In acne conglobata, inflammatory nodules form around multiple comedones, gradually increasing in size until they break open and discharge pus. Deep ulcers may form under the nodules, leading to keloid-type scars, and crusts may form over deeply ulcerated nodules, Acne conglobata may be preceded by acne cysts: papules or pustules that do not heal, but instead rapidly deteriorate. Occasionally, acne conglobata flares up in acne that had been dormant for many years.
Acne fulminans
Acne fulminans is a sudden onset of highly destructive inflammation, which normally afflicts young men. Symptoms of severe nodulocystic, often ulcerating acne, aching joints and fever are apparent. It may result from unsuccessful treatment of acne conglobata. It does not respond well to antibiotics, so accutane and oral steroids are normally prescribed. Corticosteroids or non-steroidal anti-inflammatory medications may be given to reduce inflammation. Attacks of acne fulminans may recur, and the patient may develop acne that requires long-term treatment with isotretinoin.
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