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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. Volume 2 is an alphabetical index of Volume 1.
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.
Prurigo is a reactive cutaneous disorder characterized by prurigo papules or nodules.Isolated papules that itch intensely are called prurigo papules. Scratching can cause erosions to form at the top, although unlike eczematous papules, these typically don't show any noticeable phenotypic alterations.
“Signs that scalp scabs may be related to an infection or underlying health condition include persistent itch, redness, pus, hair loss, or lack of response to over-the-counter treatments ...
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]
The main symptoms of dandruff are an itchy scalp and flakiness. [9] Red and greasy patches of skin and a tingly feeling on the skin are also symptoms. [10] Dandruff and dry scalp are often confused since they share many of the same symptoms, but their causes and treatment are different. [11]
Scalp pruritus is an itchiness of the scalp, particularly common in elderly persons. [ 1 ] : 56–57 Scalp pruritus is sometimes very unpleasant because itch and pain sensations share common nerve pathways.
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]