My grandmother suffered a cerebral haemorrhage an year back. She has been cured but is undergoing physiotherapy for her partially paralysed left arm and foot. Since last one month, she has intense pain/ sensation in her left arm every morning which heals with light massage (oil/thermal) in an hour or two. Her doctor just writes prescriptions for numbness or gives her sedatives but it is not clear why it happens. I want to know what are the probable causes and what should I do? She is weak and walks but with great difficulty.