I have had a surgery for the excision of a sebaceous cyst in my armpit 9 months ago.Now I can see two small white coloured spots on the wound and the wound is still red.sometimes (especially on sunny days and hot weather and during exercises) experience a pain and numbness around the wound and also in my whole hand .Is this a normal situation.please advice me.

Ask the surgeon or your Physician. They are the ones most familiar with your condition.

Anything else is guessing - and it could be dangerous guessing.