| nettle rash | An obsolete term for urticaria. Serum rash, a cutaneous manifestation of serum sickness. (05 Mar 2000) |
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| summer rash | An eruption of papules and vesicles at the orifices of sweat glands, accompanied by redness and inflammatory reaction of the skin. Synonym: heat rash, lichen infantum, lichen strophulosus, prickly heat, strophulus, summer rash, tropical lichen, lichen tropicus, wildfire rash. (05 Mar 2000) |
| diaper rash | An irritated red rash that is localised to the diaper area. Irritation commonly occurs secondary to chaffing and chronic moisture to the skin. (27 Sep 1997) |
| drug rash | Adverse cutaneous reactions caused by ingestion, parenteral use, or local application of a drug. These may assume various morphologic patterns and produce various types of lesions. (12 Dec 1998) |