Thanks for writing in.
The rash you are describing can be scabies,Dermatitis herpetiformis
,insect bite contact dermatitis
, Papular urticaria
Keep the area clean and dry.
You can apply calamine
lotion over the area.Also you can take tab Zyrtec for itching.
Scabies is more likely as it starts on the wrists and spread to legs,genitals,stomach etc.
Treatment can be GBHC or permethrin lotion.
Most likely cause in your case can be papular urticaria.
Pictures can be uploaded on this site but this facility is available for premium questions only.
I encourage you to visit a qualified dermatologist
for proper diagnosis and treatment.
Hope this helps.