welcome to HCM.
are they bluish black?
do you get fever?
are they along scratch marks?
are you on any aspirin
can you send a photo of the bruise
as an attachment to the mail?
it can occur in platelet or clotting disorders if it is a classic bruise/ accymosis.
or it may be an accompaniment to an infection .
take care and show a doctor to get evaluated.
pl keep me posted on your progress .
pl. rate your experience here before you log out.