Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0152030 (skin irritation)
 2,146 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Dying cells undergo coagulative necrosis or apoptosis. In the skin, apoptosis is known to occur in graft-versus-host reactions, in lichen planus, during regression of plane warts and neoplasms, and after physical injury caused by ultraviolet light resulting in sunburn cells. The present study shows that primary skin irritation also causes apoptosis. Mild, or moderate-to-considerable, dithranol irritation of healthy uninvolved human skin caused focally coagulative necrosis of keratinocytes and also apoptosis of scattered keratinocytes, i.e. condensation of chromatin and cytosol, clumping of tonofilaments and budding of membrane-bound cell fragments. These apoptotic cell fragments were engulfed in the epidermis by macrophages. Colloid bodies were detected in the upper dermis and apparently represented nonphagocytosed apoptotic cell fragments that had dropped down from the epidermis. Dithranol also caused fibrillar degeneration of melanocytes and in some cases of Langerhans' cells, indicating that colloid bodies in the upper dermis could partly derive from these cell types. The significance of apoptosis in irritant contact dermatitis could be to maintain homeostasis of epidermis and counteract the hyperplastic response caused by irritant stimuli. Another possibility is that apoptosis was the response to an injury less severe than that causing necrosis.
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PMID:Electron microscopic observations of dyskeratosis, apoptosis, colloid bodies and fibrillar degeneration after skin irritation with dithranol. 231 38

Vaccines have a well-demonstrated therapeutic benefit. However, the spectrum of potential dermatologic vaccine side effects ranges from localized skin irritation to acute and delayed response. Currently, there are limited published data correlating dermatoses with alterations in the immune system following vaccination. The mechanism by which group A beta-hemolytic streptococci may precede the manifestation of guttate psoriasis is included as a mechanism foundation as we further describe the immunopathogenesis of immune-mediated linear dermatoses. We present a rare case of linear lichen planus following intramuscular influenza vaccination, not associated with an injection site reaction. Immune-related dermatoses may be underreported, and a vaccine history should be considered in all patients with a skin condition that is otherwise attributed as idiopathic.
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PMID:Linear Lichen Planus in the Setting of Annual Vaccination. 3021 56