Hyperarousal (feeling 'on edge')
Someone with PTSD may be very anxious and find it difficult to relax. They may be constantly aware of threats and easily startled. This state of mind is known as hyperarousal.
Irritability, angry outbursts, sleeping problems and difficulty concentrating are also common.
Some people with PTSD deal with their feelings by trying not to feel anything at all. This is known as emotional numbing. They may feel detached or isolated from others, or guilty.
Someone with PTSD can often seem deep in thought and withdrawn. They may also give up pursuing the activities that they used to enjoy.
Other possible symptoms of PTSD include:
depression, anxiety and phobias
drug misuse or alcohol misuse
sweating, shaking, headaches, dizziness, chest pains and stomach upsets
PTSD sometimes leads to the breakdown of relationships and causes work-related problems.