Answer:
the necessary criterion to validate the diagnosis is "at least 1 month of clinically significant distress affecting a person after witnessing or experiencing a traumatic event that affects other parts of his or her life"
Explanation:
posttramatic stress disorder (PTSD):"is a mental health condition that's triggered by a terrifying event — either experiencing it or witnessing it. Symptoms may include flashbacks, nightmares and severe anxiety, as well as uncontrollable thoughts about the event."
Well because when ur eyes are open for a while the eye gets used to it so when u close it it hurts
Aerobic activity. Get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week, or a combination of moderate and vigorous activity. The guidelines suggest that you spread out this exercise during the course of a week.
hope this helps :)