Chinese character 疿

疿 is a variant of 痱, a Chinese medical character.

The familiar Chinese word for prickly heat or heat rash is 痱子; 疿子 is a variant spelling. An early Chinese dictionary, 《說文解字》, was presented at the Eastern Han court in 121 CE; it defines 痱 as an illness attributed to wind. The classical Chinese medical text 《素問》 links 痤痱, a term for skin lesions, with sweat and dampness.

When 疿 appears by itself, read it in a medical or dictionary context; the surrounding sentence tells you which sense applies.