Thanks for the query.
you might be suffering from a fungal infection
This type of infection is called as tinea corporis
You need treatment with topical as well as oral antifungals.
An anti histamine
tablet will help you in decreasing the itch.
Please meet a dermatologist
for final diagnosis and treatment.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.