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Sycosis vulgaris, sycosis barbae, or barber's itch is a staphylococcal infection of the hair follicles in the bearded area of the face, usually the upper lip. Shaving aggravates the condition. Gram-negative folliculitis may appear after prolonged acne treatment with antibiotics. [4]
Similarly, acne vulgaris is responsible for 3.5 million doctor visits each year in the United Kingdom. [20] Sales for the top ten leading acne treatment brands in the US in 2015 amounted to $352 million. [217] Acne vulgaris and its resultant scars are associated with significant social and academic difficulties that can last into adulthood.
Tropical acne is unusually severe acne occurring in the tropics during seasons when the weather is hot and humid. [ 1 ] [ 2 ] : 500 Skin conditions including acne are seen with more frequency in dermatological consultations in hot and humid climates, where bacterial and fungal infections are more common, than in drier climates.
The dermis is the layer of skin between the epidermis and subcutaneous tissue, and comprises two sections, the papillary dermis and the reticular dermis. [10] The superficial papillary dermis interdigitates with the overlying rete ridges of the epidermis, between which the two layers interact through the basement membrane zone. [ 10 ]
[18] [19] Acne vulgaris is the disease most commonly associated with C. acnes infection. [ citation needed ] Cutibacterium acnes is one of the most common and universal skin diseases, affecting more than 45 million individuals in the United States. 20% of all dermatologist visits are related to treating acne-related issues.
This is a shortened version of the twelfth chapter of the ICD-9: Diseases of the Skin and Subcutaneous Tissue. It covers ICD codes 680 to 709. The full chapter can be found on pages 379 to 393 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
Acne keloidalis nuchae most commonly presents itself in individuals aged 13 to 25. [3] The disease is closely related to pseudofolliculitis barbae and both occur frequently in black men in the military, where it is so common that the US Army has developed official protocols for management. [ 4 ]
The disorder can be confused or co-exist with acne vulgaris or seborrheic dermatitis. The presence of a rash on the scalp or ears suggests a different or co-existing diagnosis because rosacea is primarily a facial diagnosis, although it may occasionally appear in these other areas.