When someone begins to hear voices, see visions, have extreme states or adopt unusual beliefs, it can be very scary for those around them. Parents and family members frequently don't feel they have anywhere to turn and end up institutionalizing their loved one. I have been through that experience and understand what it's like from both sides of that decision.
You may think that your family member who is going through "psychosis" is broken and won't get better. But for many of us who've been through that experience, the process of "losing one's mind" is not only temporary, it's valuable and purposeful. The energies contained in such states can illuminate issues that belong to the whole family, not just the person experiencing them.
I fully understand that people going through extreme states of mind are often difficult to understand and hard to relate to. But there's a language to extreme states - it is a language of symbols and metaphor. The themes in extreme states may not make sense at first but with some guidance they become easier to decipher and understand.
I have experience working with families in Open Dialogue network meetings as well as years of practice facilitating groups attended by experiencers as well as their supporters. If you are a family member and would like to get greater clarity about what's happening with your loved one, my experience can be very helpful.