Thank for choosing HCM, Look mam you said Raynaud's in fact Raynaud's disease and Raynaud's Phenomenon, are two different conditions, what type of condition your son got, is not cleared here, second dyspraxia
, could be, due some damage to cerebral cortex
, low BP
can not be itself,, the reason of it need to find out, and treat accordingly, for stiff joint give some analgesic
, Keep in touch with HCM, take care of your son.