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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.
Pityriasis amiantacea affects the scalp as shiny asbestos-like (amiantaceus) thick scales attached in layers to the hair shaft. [3] The scales surround and bind down tufts of hair. [ 4 ] The condition can be localised or covering over the entire scalp.
Scalp pruritus is an itchiness of the scalp, particularly common in elderly people. [ 1 ] : 56–57 Scalp pruritus is sometimes very unpleasant because itch and pain sensations share common nerve pathways.
In babies, when the scalp is primarily involved, it is called cradle cap. [2] Mild seborrhoeic dermatitis of the scalp may be described in lay terms as dandruff due to the dry, flaky character of the skin. [6] However, as dandruff may refer to any dryness or scaling of the scalp, not all dandruff is seborrhoeic dermatitis. [6]
Erosive pustular dermatitis of the scalp presents with pustules, erosions, and crusts on the scalp of primarily older Caucasian females, and on biopsy, has a lymphoplasmacytic infiltrate with or without foreign body giant cells and pilosebaceous atrophy. [2]: 650 [3]: 761 The exact cause of erosive pustular dermatitis of the scalp is unknown.
Scalp psoriasis is an inflammatory and chronic autoimmune disease and is a common cause of scalp scabs and discolored patches of skin on and around the scalp. It can also affect other parts of the ...
Itch is likely to be more than a localized phenomenon in the place one scratches. Results from a study showed that itching and scratching were induced purely by visual stimuli in a public lecture on itching. [9] The sensation of pain can also be induced in a similar fashion, often by listening to a description of an injury, or viewing an injury ...
Allergic contact dermatitis (ACD) is a form of contact dermatitis that is the manifestation of an allergic response caused by contact with a substance; the other type being irritant contact dermatitis (ICD). Although less common than ICD, ACD is accepted to be the most prevalent form of immunotoxicity found in humans. [1]