Thank you for posting your query.
It is good to note that your father is doing well after stroke. It is important to keep his BP under control and use blood thinner medications such as aspirin to prevent stroke recurrence.
His pain is possibly neuropathic pain
. In this case, medications that would help are pregabalin
Please get him checked up by a neurologist
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist