Please help with my partner's extreme anxiety episodes.

Hi doctor,

My partner has spells that are occurring more frequently and I am really worried. The symptoms start with extreme anxiety and the need to get away and also sometimes dejavu. Followed by numbness mostly just one side of his face and body, but also total body once or twice. He says he can still see, but it is like he is looking at himself. He loses control of his body, but not conscious. This usually lasts for about 30 seconds and when he snaps out of it he starts sweating profusely and intense nausea but never vomits. This lasts for only a minute or two and then he gets better. It started 10 to 15 years ago. He used to get it only once in a couple of weeks and sometime long periods of time without happening. But, it has happened five times today. Your help and information will be appreciated greatly. Thank you.