What is the medical definition of anxiety and stress?

Many sources: Anxiety can come from chemical imbalances, a side effect of medications, external stressors, too much change in too short a period of time, and other areas. I would say go to a reputable psychotherapist immediately and talk about what anxiety means to YOU.

Stress and Anxiety: Stress can come from any event or thought that makes you feel frustrated, angry, or nervous. Anxiety is a feeling of fear, unease, and worry.