Uncare behaviour at home and not talking

Hi Doctor, My brother who is 32 years old is showing uncare behaviour at home. He was lastly working In an IT company in Navi Mumbai whereafter due to medical reason was voice being heard in ears and having headaches plus head spining from inside he had to quit his job around 4-5 years back. However he was treated and was told to consult a psychiatrist which we couldnt do now he is sitting at home since 4-5 years without a job. As he is about an age of marriage family is very upset about his attitude of uncareness towards family. He doesn't speak to anyone in family except mother which also he speaks online for food. All the time he is sitting on his personal computer looking at it but whenever we try to see he puts the screen off. Moreover I have observed that he sometimes watch porn videos. He also reads some novel over the phone after vacating he PC and laugh in himself. He doesn't socialize and we are trying to look for a doctor who can visit home and do checkup.