Q: What is the cause of burning sensation in the armpits?

A:You should consult a neurologist, who would examine you thoroughly and maybe order some of the following investigations: 1. Complete blood count 2. Blood sugar F and PP 3. Vit B12 levels 4. Thyroid function test 5. Nerve conduction study 6. EMG 7. Serum protein electrophoresis Subsequently, on the basis of the diagnosis made, he may start you on any of the following drugs: 1. Tryptomer 2. Carbamazepine 3. Gabapentine Such a problem can be best dealt with by a neurologist, the above is just a rough guide.