How should I initiate pharmacological treatment for a patient diagnose

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Initiation of pharmacological treatment for delirium tremens in primary care:

Delirium tremens is a medical emergency and patients should be offered admission to hospital for medically assisted alcohol withdrawal whenever possible, as primary care settings lack the resources for safe 24-hour monitoring and management. This is the preferred and safest approach.
If hospital admission is not immediately possible and treatment must be initiated in primary care, oral lorazepam is recommended as the first-line pharmacological treatment for delirium tremens.
If symptoms persist or the patient declines oral medication, parenteral lorazepam or haloperidol may be considered, but these are off-label uses and require specialist oversight.
Patients with delirium tremens require close monitoring by healthcare professionals skilled in alcohol withdrawal management, which is generally not feasible in primary care.
Concurrent administration of thiamine should be given to prevent or treat Wernicke's encephalopathy, especially in malnourished or high-risk patients.
Given the complexity and risks, primary care clinicians should urgently refer or arrange transfer to secondary care for comprehensive management.

How should I initiate pharmacological treatment for a patient diagnosed with delirium tremens in a primary care setting?