For more than 2 months, I am having regular headache, areas changes sometimes its back of head, forehead, upside of head. From last 10 days, it feels like my head is rotating, facings difficulty in vision when see anything continously. I got my eyesight checked which came out to be fine. Also, these days it has become regular when I fumble day to day words and unable to choose words to speak. Unable to figure out what is happening. Kindly suggest which specialist to consult.