Hello Sir/Madam, I was an alcoholic and substance abuser earlier right from early my twenties until three years back when I controlled and got out of it. Now I have started occasionally consuming alcohol in small quantities. While drinking I am fine but once I stop I find it extremely difficult to breathe. I feel very suffocated and then it leads to a bad headache within an hour. The headache gets cured only after a nap then. This happens even if I stop after cosuming one can of beer. I also feel very anxious at times with and without alcohol. Please guide.