You are having lichen urticatus..also known as papular urticaria
It is hypersensitive reaction to insects,bed bugs or mosquitoes
There occurs erythematous papulovesicular erutions on trunk and exrimities.
Take antihistaminics like cetirizine
till itch is relieved.
If there is severity, you may take short and tappering course of steroids
If you feel , infection in lesions, take one week course of antibiotics.
Apply calmine lotion or mild steroids with antibiotic cream.
Be away from insects.
I think, you might be improved. However, you consult dermatologist
I hope you got my answer.
Dr. Ilyas Patel MD