signs of ptsd

My friend agrees he has signs of PTSD and wants to be treated and a therapist suggested to this effect.

Here are some of my observations that may or may not be impacting the syndrome.

1. Seems to intensify towards new moon and full moon days.
2. He has had a long education cycle. He is 27 and is still in college. He is actually doing a second masters degree along with another associated bachelors degree in Math. But he fees he has not yet gotten into good career like his peers in school. He forgets the fact that he has to complete the program before he can get into career he wants.
3. He is quite intelligent by nature and is curious to explore enigmatic subjects like meaning of life, etc.
4. Quite often, he goes on an eating binge as if he feels compulsive to eat. My observation is, either before or after this, he will have suffered an attack of negativity and pessimism.
5. He feels very depressed when such attack happens.
6. During these times, he will bad mouth parents and gets into a mindset that they are not caring enough for him. Actually his parents bet their life for him.
7. When he was a baby, he used to use his dads shoulder as teether and would bite into his shoulder when he felt the teething itch. He would refuse to use any other teether device. Wonder if his reliance on his fathers shoulder makes him feel that he, even now feels compelled that the parent HAS something to do with his trouble.

These are all the observations I could gather. Please suggest possible remedies.

Thanks in advance
[Edited by vidyasankara on 2023-11-27 07:30:51]