This is one I can identify with. My brother came off his bicycle (no helmet) and landed on his head. Broken cheek bones, fractured skull bleeding on the brain, swollen brain, severe concussion and unconscious for 5 days. Was in the neurological ward of the local hospital for 4 weeks. The doctors didn't know what the outcome would be. I had our church and Christians I knew around the world praying for him. When he became conscious he was rambling and didn't know where he was or what year it was or pretty much anything else. I left him after a visit to the hospital and came back the next day and there he was sitting in his right mind and completely coherent. I'll pray for your cousin. God heal him and bring him back to normality in Jesus name. I'll continue to pray for him.