Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042109 (urticaria)
 6,569 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

From among 810 persons subjected to a medical examination, skin lesions were found in 33.3%. These were mostly: seborrhea (89 cases), occupational naevi (55 cases), dermatomycosis (49 cases), urticaria (21 cases), eczema (12 cases). Other dermatoses were found in 44 workers, however, in a small percentage, not greater than in other non-industrial populations. No occupational dermatoses resulting from exposure to fundamental materials or dyes used in production were found.
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PMID:[Dermatoses in tapestry workers]. 15 5

Oral contraceptives (OCs) can affect the skin through their hormonal effects or through iatrogenic effects associated with their toxicity in certain individuals. They may also be beneficial in certain androgen-dependent dermatoses. Toxic effects of OCs are rare but potentially serious; they should be diagnosed early and require permanent termination of OC use. The clinical manifestations are variable and not specific to the medication. The most frequently reported manifestations are allergic vascularities which may lead to serious renal complications, fixed pigmented erythema, urticaria, which may have other etiologic factors, and lichenoid eruptions. Combined OCs, because of their estrogen content, may cause sensitivity to light in susceptible women. Other dermatoses can be initiated or aggravated by OCs without direct relation to their hormonal effects. OCs are therefore contraindicated if there is a personal or family history of porphyries or a personal history of systemic lupus erythematosus, erythema nouex, herpes gestationis, or malignant melanoma. Hormonal-related dermatological effects caused by either progestins or estrogens have become less frequent as dose levels have declined. Chloasma, either melasma or a poorly defined spotty pigmentation, accounts for 2/3 of cases of OC-related dermatoses. It is more common in women of Mediterranean background. 80% of affected OC users have a history of "mask of pregnancy", but the condition is also found in nulliparas. Exposure to sunlight is a factor. Women with a history of chloasma of pregnancy and dark coloring should not use OCs. Seborrhea is directly related to the androgen effect of OCs and is less likely to occur with 17 OH progesterone derivatives than with 19 norsteroid derivatives. The role of androgens in acne is well known, but 2 other factors are necessary: an anomaly in keratinization and proliferation of corynebacterium acnes, a saprophyte of the follicles. OCs do not necessarily need to be suspended during well-conducted acne treatment. Alopecia is rare but difficult to diagnose because of its psychological aspects. Androgenic alopecia is aggravated by progestins derived from 19 norsteroids. True hirsutism caused by an androgen-producing ovarian pathology is not related to OC use. Estrogens are incriminated in the etiology of telangiectasies, permanent dilatations of the arterioles. Once developed the condition does not regress and requires treatment with sclerosing agents, electrocoagulation, or laser. The various dermatological risk factors should be ruled out before prescription of an OC. Classic contraceptive pills are not commonly used in treatment of common acne because the strongly estrogenic climate required for therapeutic utility carries the risk of hypertriglyceridemia, thrombophlebitis, and possibly carcinogenesis. The recent development of pills containing the antiandrogen cyproterone acetate instead of a progestin in combination with ethinyl estradiol reduces androgenic effects in women. This pill may be useful in cases of severe acne, severe seborrhea, androgenic alopecia, or excessive facial hair.
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PMID:[Cutaneous effects in hormonal contraception]. 1228 Dec 76

Although skin diseases are common in children, there are very few population-based studies in West Africa. Recently, there has been considerable emphasis on hygiene and socio-economic impact on the incidence of allergic disorders in children. We determined the prevalence of skin diseases in a public primary school in Ibadan (southwest Nigeria). A questionnaire for assessing factors associated with the prevalence of diseases was completed, and a complete physical examination was carried out on 1066 students. The study included 529 (49.6%) boys and 537 (50.4%) girls with a mean age of 8.8 +/- 2.5 years. The mean family size of the subjects was 6.7 +/- 2.3 while the mean number of rooms in their homes was 2.6 +/- 1.45. Infectious dermatosis was commonly observed. Of 375 children with a skin lesion, 162 (15.2%) had dermatophytosis, most often tinea capitis, 50 (4.7%) had pityriasis versicolor, and 50 (4.7%) had scabies. Other dermatoses observed included papular urticaria in 35 (3.3%) and angular cheilitis in 27 (2.5%) children. One or more melanocytic nevi were found in 40 (3.8%) children while 138 (12.9%) and 77 (7.25%) had tribal and scarification marks, respectively. Atopic eczema and viral warts were virtually absent. We concluded that fungal infections and scabies were the most common skin diseases in our study population, whereas allergic illnesses were nearly absent.
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PMID:Prevalence of skin disorders in school children in Ibadan, Nigeria. 1566 Aug 88

Pruritus is a natural defence mechanism of the body and creates the scratch reflex as a defensive reaction to potentially dangerous environmental factors. Together with pain, pruritus is a type of superficial sensory experience. Pruritus is a symptom often experienced both in healthy subjects and in those who have symptoms of a disease. In dermatology, pruritus is a frequent symptom associated with a number of dermatoses and is sometimes an auxiliary factor in the diagnostic process. Apart from histamine, the most popular pruritus mediators include tryptase, endothelins, substance P, bradykinin, prostaglandins and acetylcholine. The group of atopic diseases is characterized by the presence of very persistent pruritus. It is found in almost all patients with atopic dermatitis or urticaria. Cutaneous T-cell lymphoma is another group of pruritic diseases where the symptom of pruritus develops at an early stage and becomes intensified as the disease progresses. Other dermatoses include psoriasis, parasitic diseases and also systemic diseases in which pruritus is often the first and the only symptom suggesting an internal health problem. Cases of pruritus in healthy subjects, possibly associated with skin dryness or pregnancy in women, have also been reported. This paper presents mechanisms responsible for pruritus and the most important dermatoses in which this symptom is found. Treatment of pruritic dermatoses is difficult and always requires an interdisciplinary approach. Not all dermatoses can be successfully treated with antihistamine drugs, particularly if patients suffer from cutaneous T-cell lymphoma, liver or kidney diseases. For this reason, the problem of pruritus is the focus of attention of many scientists, and the subject of interdisciplinary studies.
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PMID:Pruritus in selected dermatoses. 2764 64