Hi, we would get a clear picture if you
would explain about the spots. This can
happen due to local causes like skin irritation may be due to allergic causes.
The strongest possibility would be insect bite including chigger bites, mites, flea etc.
For itching anti histaminic and medium or high potency topical corticosteroids against prescription are quite effective. Vigorous cleansing with soap and water should be done.