My 20 Year Old Son Just Started Taking Thorazine Because

My 20 year old son just started taking thorazine because he has been hearing and seeing things for several years. He has been on many different medications including tegretal, risperadone, sapphris, zyprexa, Effexor, trileptal, trazadone, clozapine, nothing seems to work for long. He started on thorazine 50mg/50mg/200mg three days ago. He has developed numbness in his legs which seems to be progressing up his body to his arms. He has fainted twice and has wet himself numerous times as well. Can these be side effects of thorazine and will they go away?