hi welcome to health care magic,
im dr satya,
itchy pimples over body, severe scratching, and bleed, and scar points towards papular urticaria
, the cause of which is many, kindly get a complete blood test
done to eliminate many infectious causes, and to rule out any alteration in the blood.
topical applications of the calamine
lotion helps to relieve itch in some cases.
try and look for foods that aggravate or medications that you use.
the best way is to get a biopsy
done to get a better picture.