PTSD is a terrible thing to live with. It affects everybody in different ways.
Because I have both PTSD and depression I have a wide range of symptoms. The most obvious symptoms are the mood swings. I have days when I feel really good, and then for no apparent reason I wake up in the morning and I hate myself and I hate the rest of the world. I feel really nasty, and I have to work hard to not lose my temper.
I have occasional days when I would rather stay in bed, but I have a good job, which gives me the reason to get up. There are also days when all I want to do is sit and cry, again I have to work hard to appear 'normal' to everybody.
One of the symptoms of PTSD is the 'flashbacks' - I regularly have flashbacks to the time when I lost my baby son, who was stillborn.
The other thing that I regulary have are bad dreams. THese are sometimes so vivid, 'real' and disturbing that they affect me for most of the following day.