Thank for asking to HCM
I can understand your concern, this could be scabies
at least cab be said from the history given, if this is being diagnosed as scabies then in my opinion this need to be treated with the following medicines,
1) Gama benzene lotion for local application apply this for consecutive three days
2) Tab Levocetrizine 10 mg three times in day
3) Tab Azithromycin
500mg once in day for three days
hope this information helps you, have a nice day.