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Cutaneous squamous-cell carcinoma (cSCC), also known as squamous-cell carcinoma of the skin or squamous-cell skin cancer, is one of the three principal types of skin cancer, alongside basal-cell carcinoma and melanoma. [10] cSCC typically presents as a hard lump with a scaly surface, though it may also present as an ulcer. [1]
A very common and dangerous type of skin ulcer is caused by what are called pressure-sensitive sores, more commonly called bed sores, which are frequent in people who are bedridden or who use wheelchairs for long periods. [citation needed] Other causes producing skin ulcers include bacterial and viral infections, fungal infections [6] and cancers.
A boil, also called a furuncle, is a deep folliculitis, which is an infection of the hair follicle.It is most commonly caused by infection by the bacterium Staphylococcus aureus, resulting in a painful swollen area on the skin caused by an accumulation of pus and dead tissue. [1]
Marjolin's ulcer refers to an aggressive ulcerating squamous cell carcinoma presenting in an area of previously traumatized, [1] chronically inflamed, [2] or scarred skin. [3]: 737 [4] They are commonly present in the context of chronic wounds including burn injuries, varicose veins, venous ulcers, [5] ulcers from osteomyelitis, [6] and post radiotherapy scars.
Erythroderma is an inflammatory skin disease with redness and scaling that affects nearly the entire cutaneous surface. [ 1 ] [ 2 ] This term applies when 90% or more of the skin is affected. In ICD-10 , a distinction is made between "exfoliative dermatitis" at L26, and "erythroderma" at L53.9.
Lupus pernio is a chronic raised indurated (hardened) lesion of the skin, often purplish in color. It is seen on the nose, ears, cheeks, lips, and forehead.It is pathognomonic of sarcoidosis.
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
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.