It's most likely that this phrase is intended as an insult. You could say its literal meaning is a question about the interlocutor's health. But if you are really concerned about someone's health, you would not choose such wording. The intended meaning is probably something like "Are you mentally ill by any chance?" Avoid.

thank you so much for answer

I might be a little late to answer this question, but I don't entirely agree with Shin. Depending on the context, the speaker might be joking or poking fun at the listener, esp. if they are friends. I wouldn't become all defensive and think "this is an insult". If a friend of mine says that, I might answer "well, sorta, hahaha". Again, it all depends on the context and the relationship of the listener and speaker.