rash(на коже; a large number of red spots on the skin • That child has a rash – is it measles); eruption; poison oak(от прикосновения к этим растениям); breaking out; morbilli
lesion(несмотря на терминологическое соответствие понятию "морфологический элемент кожной сыпи", на практике "lesion" может быть наиболее удачно переведено в дерматологическом контексте просто как "сыпь" или "высыпание". E.g., "A 35-year-old male presented to clinic with a bullous lesion over left ankle". Здесь "bullous lesion" – буллезная сыпь. Min$draV)
fall thick and fast(удары сыпались градом – blows were falling thick and fast VLZ_58); rain down(Daniel vaguely remembered a period of optimism a couple of years back, when a corporate tenant had finally picked up the lease on the old power plant and the town went breathless, waiting for the job offers to rain down on them.4uzhoj); rain down
spout(with acc. or instr., words, information, figures, etc.); of rain, snow, etc. fall; spin off(He (Putin) doesn't spin off folk sayings or bang his shoe like Khrushchev. VLZ_58)