<s>[INST] I randomly started to get bumps on my upper thigh and noticed that when I itch white bumps appear and soon turn purple  like a bruise under my skin ... It's spreading and now is all over my legs , stomach ,and arms ... Itches a lot at night . What could this be !!! [/INST] HIWelcome to H C MI  I my opinion it  IS  due to allergy or worms in intestines .  GO FOR BLOOD EXAM. FOR TLC,DLC,TOTAL Eosinophil  Counts ,IGESugarUrinalysis, Your doctor would prescribe Anti allergy medicines,may deworm you.Thanksyour doctor would prescribe antiallergic medicine taken in evening ,,deworming medicine for worms in intestines .thanks </s>