Welcome to HCM.
You have very vague complain.
Burning,itching marks are usually due to some allergic reaction
after contact or some insect bite.
Apply mild steroid
cream on it.
You can tale levocetrizine to subside itching and nsaid
to subside pain.
Start b12,folic acid
,other vitamin,minerals to boost up your general health.
Consult you family physician first for proper guidance and medications.