Can i develop pots after developing cardiac neurosis (cardiac anxiety?

While the condition, postural orthostatic tachycardia syndrome, can cause associated anxiety symptoms, the latter is not a cause of POTS. It's a primary disturbance of the autonomic nervous system causing failure to maintain a normal blood pressure upon going from a sitting to a standing position. This results in sudden reflex very rapid heart rates as the body tries to correct the low BP.