Over time pot could make ptsd worse. Prolonged stress depletes gaba. Marijuana reduces gaba. This is why some potheads get paranoid and a few get psychotic.

The cure you are looking for oa the amino acid and neurotransmitter gaba. Its cheap and legal. It doesn't mask ptsd symptoms. It reverses the physiological changes of ptsd. Iit will make you closer to normal. It is safe and effective. Read Billie J. Sahleys little books to learn more. She was a pain researcher and treatment provider.

Pot is good medicine and a good recreational drug. There's nothing wrong with it. It's just not a cure for ptsd. It can give you a break from symptoms now and then. Regular use will make you worse.