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Lichen simplex chronicus (LSC) is thick leathery skin with exaggerated skin markings caused by sudden itching and excessive rubbing and scratching. [1] It generally results in small bumps, patches, scratch marks and scale. [1] It typically affects the neck, scalp, upper eyelids, ears, palms, soles, ankles, wrists, genital areas and bottom. [1]
ICD-9 chapters; Chapter Block Title I 001–139: Infectious and Parasitic Diseases II 140–239: Neoplasms III 240–279: Endocrine, Nutritional and Metabolic Diseases, and Immunity Disorders IV 280–289: Diseases of the Blood and Blood-forming Organs V 290–319: Mental Disorders VI 320–389: Diseases of the Nervous System and Sense Organs ...
Pityriasis lichenoides et varioliformis acuta is a disease of the immune system.It is the more severe version of pityriasis lichenoides chronica.The disease is characterized by rashes and small lesions on the skin.
Although other forms of the disease occur at younger ages, some individuals start having long term symptoms at thirty years of age. This disease also affects adolescents and young adults. This also affects the immune system which therefore results in rashes. The symptoms rarely affect the face or scalp, but occurs at other sites of the body.
[19] [20] Clinically, the diagnosis of any particular skin condition is made by gathering pertinent information regarding the presenting skin lesion(s), including the location (such as arms, head, legs), symptoms (pruritus, pain), duration (acute or chronic), arrangement (solitary, generalized, annular, linear), morphology (macules, papules ...
The diagnosis is frequently made by treating the initial triggering skin problem and observing the improvement in the eczematous rash. Both the initial skin problem and the id reaction must be observed to make the diagnosis. [5] [6] Not all dyshidrotic rashes are id reactions, but id reactions are often dyshidrotic-like. [2]
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.
Diagnosis of nummular dermatitis is largely via clinical observation. Biopsies are typically not necessary, and cannot be used to rule out other atopic dermatitis or other eczemas. [ 9 ] [ 10 ] However, patch testing may be employed to rule out irritants ( contact dermatitis ) as a cause.