the cuases:
1.Heredity. Panic disorder has been found to run in families
2.Biological causes — obsessive compulsive disorder, post traumatic stress disorder, hypoglycemia, hyperthyroidism, Wilson's disease, mitral valve prolapse, pheochromocytoma and inner ear disturbances (labyrinthitis).[2] Vitamin B deficiency from inadequate diet or caused by periodic depletion due to parasitic infection from tapeworm can be a trigger of anxiety attacks
3.Phobias
4.Short-term triggering causes — Significant personal loss, including an emotional attachment to a romantic partner, life transitions, significant life change, stimulants such as caffeine or nicotine, or other drugs such as marijuana and psilocybin, can act as triggers
5.Medications — side effect of medications such as Ritalin (methylphenidate)...
6. Alcohol, medication or drug withdrawal
7. Hyperventilation syndrome — Breathing from the chest may cause overbreathing, exhaling excess carbon dioxide in relation to the amount of oxygen in one's bloodstream
8.Associating certain situations with panic attacks, due to experiencing one in that particular situation
9.Chronic and/or serious illness as Long QT syndrome; CPVT or Wolff-Parkinson-White syndrome