Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services for a seizure, fainting, severe confusion, hallucinations with unsafe behavior, breathing difficulty, vomiting blood, black stools, or inability to wake.
Return for urgent medical assessment if vomiting comes back, food or fluids cannot be kept down, urination decreases, abdominal pain worsens, or withdrawal symptoms develop.
If alcohol use has become difficult to control, follow-up can also connect the person with addiction medicine, counseling, or community services.
The article also says
Before discharge, the medical team generally confirms that vomiting is controlled, food and fluids can be taken safely, and important laboratory abnormalities are improving.
The underlying reason for poor intake or abdominal pain should also be addressed.
Follow the discharge plan for repeat blood tests, nutrition, medicines, and appointments.
A primary care clinician can review recovery, liver and pancreas health, nutrition, diabetes risk, and any ongoing symptoms.
Stopping alcohol suddenly can be dangerous for someone who is physically dependent.
Symptoms such as shaking, sweating, anxiety, or insomnia should be discussed with a clinician.
A history of withdrawal seizures, hallucinations, or delirium is especially important when planning a reduction or stopping alcohol.
Longer-term prevention focuses on avoiding another cycle of heavy drinking, starvation, vomiting, and dehydration.
A practical plan may include regular meals, early care for persistent vomiting, and evidence-based treatment for alcohol use disorder.
Every sign above is quoted from the sofidex article on Alcoholic ketoacidosis. If you are not sure, err upward — it is always reasonable to be checked.