Find a NLP (Neuro Linguistic Programming) practitioner. They use hypnosis to teach patients other responses to the stimulus. Panicking is just one of many responses to a stimulus. The reason NLP practitions are successful in curing panic attacks so fast and for good (like during the first session) is that they quickly gain access to the part of the brain which forms panic responses and they teach the panicker to re-frame those experiences into harmless memories.

Doctors are about as good at curing panic attacks as they are at getting their patients to lose weight.