Hello Ranj
My first question is...have you seen a doctor or a dermatologist?
Do you suspect that these are insect bites? Have you come into contact with something that you are allergic to? Do you have any food allergies?
It is impossible to tell you what this is on the Internet. You really do have to get a proper diagnosis from a doctor.
You may wish to read my article on What to Do When You Have an Unexplained Rash.
Hope that helps some. Thank you for your question.
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