At my cram school a noticeable numbers of younger students have their legs covered in little red/brown bruises or marks of some kind. A number of the female teachers also seem to suffer from this condition; seems to affect the lower legs and shins more prominently, sometimes upper legs but never arms or face.
Does anyone know what I'm talking about? Is it some skin condition, or just bruising from riding on the back of a scooter badly? Just curious as it seems so wide-spread.












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