Thanks for writing in HCM.
The condition can be allergic contact dermatitis
, lichen planus, nummular eczema
,papular urticaria, insect bite reaction etc.Diagnosis cannot be made without visual clue.
Treatment depends on diagnosis.A visit to dermatologist
will confirm the diagnosis.Blood work up may be required for diagnosis.
Till the time you can take tab.Cetirizine 10 mg twice daily .It will decrease itching.
Also you can apply mild steroid like hydrocortisone
over the rashes.
Hope this helps.