SIR,you may be suffering from Post-herpetic neuralgia Syndrome. Self care measure like wear comfortable clothing – clothes that are too tight or made of rough or synthetic material may irritate your skin and make your symptoms worse; wearing cotton or silk clothing will usually cause less irritation. medications may be used to reduce symptoms: -combination of paracetamol and codeine -topical treatment – capsaicin cream and lidocaine plasters -Antidepressants-Amitriptyline and duloxetine -Anticonvulsants-Gabapentin and pregabalin -opioids -morphine or oxycodone if the medications listed above have not helped must consult with your doctor before starting drug.