That is an interesting line to draw. Are "MENTAL withdrawal symptoms" not neurological in nature? Are "hallucinations or the shakes or seizures" not based in neurology?
Delirium tremens is a severe form of alcohol withdrawal. It involves sudden and severe mental or nervous system changes.
Delirium tremens may also be caused by head injury, infection, or illness in people with a history of heavy alcohol use.
* https://www.reddit.com/r/leaves/comments/17fhb1y/intense_phy...
* https://www.reddit.com/r/leaves/comments/17fazp4/sweating_in...
* https://www.reddit.com/r/leaves/comments/yt9sud/cannabis_doe...
Thousands more examples: https://www.reddit.com/r/leaves/search?q=symptoms&restrict_s...
Also, I'd argue that brain fog, low energy, insomnia, lack of appetite, night sweats, shaking are all physical symptoms, chest pains, heart palpitations.