Booze. When I was in the depth of it, whew, it's even hard for other alcoholics to realize what it was like for me when I was near the end.
Agitation[7]
Alcoholic hallucinosis[3]
Anorexia[7]
Anxiety and panic attacks[3][8]
Catatonia[9]
Confusion[3]
Delirium tremens[3]
Depression[10][11]
Derealization
Diaphoresis[7]
Diarrhea[7]
Euphoria[3]
Fear[3]
Gastrointestinal upset[7]
Hallucinations[7]
Headache[7]
Hypertension[7]
Hyperthermia (fever)
Insomnia[7]
Irritability[3]
Migranes
Nausea and vomiting[12]
Palpitations[7]
Psychosis[3][13]
Rebound REM sleep[14]
Restlessness[3]
Seizures and death[7]
Sweating[7]
Tachycardia[7]
Tremors[7]
Weakness[7]
I had all of those, after drinking for about 5 years very hard. I could drink a liter a day without eating for 4-5 days, it just killed my appetite. To have your body actual feel like it's eating itself from the inside is something that is inexplainable. And those tremors.... oh you people have no idea, mine would never go away, unless I was pretty intoxicated, and then they would subside, but to not being able to hold a cup or a spoon, or being able to sign your signature, or being able to grab anything without looking like a total.. freak. I can't tell you how much anxiety my tremors had given me, just trying to go to the store to get more booze was as a humiliating experience a person can have imo. Those clerks look at you like ... i dunno, not being able to control parts of your body no matter how hard you try is a very scary thing to me.