My (18F) brother (15) suffers from anxiety but not that severe that it interferes with his daily life. My parents know that. But recently he had a panic attack when my parents got to know that he was not attending his online classes due to his anxiety. And my father called every teacher infront of him. Just after that he had a panic attack.

Now when I asked him if he told them about the panic attack or wants to tell them..he said he only has had 2 or 3 panic attacks in the past few years. Then I advised and asked him if I should tell them. He said to me that I should not interfere in his personal life and let him live a normal life and not ruin his life..while saying this he was suddenly angry or annoyed idk..but he was gritting his teeth and pointing a finger at me and his face was up close to me. I was so scared..he sometimes suddenly becomes angry and idk what happens to him. He then said to me if I told my parents..he would lose it and would not be able to control himself (idk what he meant by that). 

What should I do? Should I tell them..but it will ruin the relationship between me and my brother. Please help me😢..I am desperate😭