Starnge ideas and bad thoughts

Hello. My brother is 25 years old and we don't live together since he moved our last year. He moved out with his girlfriend. At that time, he mentioned that he thought the spirit of a dead singer to live within his girlfriend, but we didn't think this was important. He moved away from her and no longer works, he doesn't take shower, he tends not to eat (that's why he's lost weight). We're worried because last time we talked to him by phone, he said he's been working at home with his "satellites" (I don't understand how). He says he keeps those that "come from God", as the other ones try to steal his thoughts, he invented unusual names for them. We don't know why he says these things, he also told my sister who's 7 years old that his lost thougts are placed and hidden in her womb. What should we do??

[Kevin Kennedy, Ph.D.]

He needs to be hospitalized because he is suffering from a psychotic process. It may be due to schizophrenia (likely) or it could be a psychotic aspect of a Bipolar Disorder. In any case it requires acute treatment. If he is agreeable, he should go the emergency room of the local hospital for evaluation and the hospitalization will occur right from there.