My memory sharpness drastically reduce..I have poor thinking skill...I could not able to think about my career and I m wasting my time bcz of drastically reduce in focus and alertness of my mind..my mind has become too slow...I do yoga,headstand,anulom vilom,pushups and everything for 1hour but still I have very poor memory no progress is happening....it started when I used kera xl serum for 2 month on my scalp before that everything was normal. Which doctor should I consult neurologist or psychiatrist or general physician??