Refers to the over-reaction to symptoms exhibited by people who are suffering a panic attack (ie; thinking they're having a heart attack) and the subsequent increase in anxiety levels.

Note: Positive feedback is actually an electrical term meaning "feedback that results in the amplification or growth of the output signal." In terms of anxiety, this means the feedback (the symptoms) amplifies (worrying unnecessarily about symptoms) the output signal (increased anxiety).

fear, panic, anxiety, fright, apprehension, nervousness, consternation, danger signal, warning, bell, alert, siren, hooter, distress signal

anxiety anxiety anxiety anxiety

anxiety

The base word for "anxiety" is "anxietas" from Latin, meaning "to choke" or "to strangle".