Dx panic disorder&gad for years.now i have a lingering fear of going crazy.sounds silly i know, but does that ever really happen?suddenly go insane?

Seek Treatment: You ask a very important question whose origins lie many decades in the past. You expressed a fear of "going crazy" and asked about going "insane". These are archaic terms used during a time when we didn't understand mental illness and had virtually no treatment. Today is very different, but the stigma and prejudice live on in these terms. Treatment such as psychotherapy and/or meds can help.

Sudden Psychosis: Acute psychosis would be the term. Insanity is actually a legal concept, but used in common parlance. Acute , or sudden , psychosis does occur, for various reasons, from mania in bipolar disorder to a post infectious brain inflammation(encephalopathy), to a toxic drug effect, etc. It isn't part of gad/panic. People just feel like they may lose their minds.

Fear: Not psychosis. This fear is part of gad, very common, and can be eased with further intervention.

No, and yes.: Part of this is about how you define "crazy." We all do things in life that are not really explainable, and if we have done them impulsively, we may not know why. But insanity, craziness, does not operate that way. Psychosis tends to be time limited for most, and related to toxins, drugs, or trauma. When it comes to that,ANYONE can experience these. Anytime we are exposed.

Panic disorder and: GAD are neurotic disorders, not psychosis. Most people fear that they might be seen as "crazy" when they start therapy and fear their worst symptoms might mean they are crazy. Start working with a therapist to overcome your panic disorder and GAD. Your therapist will talk to you about what is making you fear that you might be going crazy and help you stop worrying about it.