I would be pleased to answer your question.
The next best step for you would be to take an appointment for a blood test
called HIV DUO testing . In this test they will take the blood sample for p 24 antigen and ELISA
antibody for HIV .
This is the best and only way you will get to know about HIV and AIDS
Though itching over the body is a sign of HIV , it is not Diagnostic .(it does not confirm HIV)
You should discuss with your doctor to rule out Scabies
and other parasites.
Thanks and Take care