106 Rule-Outs

Medical and substance-related mimics, red flags, and minimum workup logic. Use when presentations feel atypical or high risk.

Includes: - Delirium and acute confusional states - Substance intoxication and withdrawal - Medication and iatrogenic syndromes - Endocrine and metabolic mimics - Seizure, autoimmune, infectious, neurodegenerative mimics - Sleep disorders masquerading as psychiatric illness - Pain and fatigue syndromes