What's happend to my brother?

Someone very close to me suffered in a similar way so I can understand well what you and your brother is going thru. I sounds to me like he is having psychotic sounds very episodes - that sounds very scary and it is especially when the person in psychosis believes everything - the hallucinations etc and acts on them. It is really important to talk to your brother especially when he comes down to his normal self. and to put the experience on a 'normal' level for example if he says he is having an awakening(just like my friend) then i believe that he has already a great interest in such things - like seeing the light, spiritual awakenings etc.So please speak to your brother and tell him that this is an illness which can lead to . It is really important for him to recognise this - that what is happening to him actually the result of great stress on the body and mind and a response (like a valve) If your brother is left alone to act on these halluicinations he could begin to believe he is omnipowerful and carry out some irrational act. Hospital and medication will help him and your support also .Your brother is having a nervous breakdown, Th e weed probably doesnt help but it sounds like stress...maybe this should be a wake up call for him he is lucky to have you!.Goo d luck and dont be scared.it takes time.