My 6-year-old daughter got what we thought were bug bites in October on her arms and shoulders.  We used Benadryl and lotion.  They cleared up.  Almost a month later in November, she got them back but this time they were on her shoulders and stomach and a few on the legs.  We took her to the doctor who was curious about something in the pox family.  They cultured a lesion and said it came back normal.  The lesions all finally cleared up.  Now the end of December/early January, she is getting the spots back again.  This time they are strictly on her back.
HIT hank for asking to ChatDoctorThe over all history is suggestive of some allergic reaction that appears on exposure underlying causative factors only, (Hypersensitivity reaction) and that need to be found out, meanwhile you can give "HY Chat Doctor. 5 mg twice day, this will give better result, take care and have good day.