Hypotension refers generally to an unusually low blood pressure and is often an accompanying symptom of Vasovagal Anxiety Reaction.
Its symptoms may include dizziness, fainting, fatigue and/or shortness of breath. Hypotension may also be accompanied by (and may be secondary or contributory to) bradycardia.
Hypotension brought on by Vasovagal Anxiety Reaction usually passes within minutes of the first onset of symptoms. If symptoms continue beyond a few minutes a medical professional should probably be consulted.