heat urticaria; thermal urticaria
Medical term for hives triggered by heat, such as hot baths, exercise, or warm environments.
Heat urticaria can cause symptoms when body temperature rises, such as during bathing or exercise.
Cold urticaria, triggered by cold exposure, in contrast to heat-induced 温熱蕁麻疹.
General term for urticaria (hives); 温熱蕁麻疹 is a specific subtype.
Compound of 温熱 (heat) and 蕁麻疹 (urticaria). The exact historical derivation is uncertain; the spelling is conventionally associated with the medical meaning.