I am 57 years old, male, having mixed Depression-Anxiety and Schizophrenia since 1987. I have taken innumerous drugs for the above ailments, but right now, I am taking a) Venlor XR 150 mg 1-0-0 B) Mirtaz 15 mg 0-0-1 for depression-anxiety. A) Sizodon plus 0-0-1 B) Sizopin 25 mg 0-0-1 for Schizophrenia and Lithosun 300 mg 0-0-1 as a mood stabilizer. There is relief. But of late (say, since a month), I have a problem. There is numbness in a part of my left wrist (near the thumb area) and it is spreading upwards. What is the problem? Is it due to the drugs I am taking or a neurological one? Please confirm.