Clinical Recognition

Lesson 2 of 16 · about 6 min

Safety First: Risk & Rule-Outs

What must be checked before anything else

Before any elegant differential: is this person safe, is this actually medical, is this a substance, and is this mania? Four gates, every intake.

Gate 1: suicide and self-harm

Use a real tool, not a vibe: the C-SSRS screener (ideation types 4-5, intent or intent-with-plan, or any recent behavior drives the high-risk pathway) or the 4-item ASQ.

A positive screen leads to a brief assessment, a Stanley-Brown safety plan, and lethal-means counseling. 988 goes on every plan. No-suicide contracts are out; safety planning is the standard.

DSM-5-TR added codes for suicidal behavior and nonsuicidal self-injury so risk can live visibly in the record.

Gate 2: medical mimics

Thyroid disease impersonates depression and anxiety, sleep apnea impersonates depression and ADHD, anemia and B12 deficiency impersonate fatigue-depression, and delirium impersonates everything acutely. New client, no medical workup in the last year, plus new psychiatric symptoms: ask about the last physical and coordinate with their PCP before locking a formulation.

Gate 3: substances and medications

Ask, every intake, without exception: alcohol, cannabis, stimulants, prescriptions (including someone else's), caffeine dosage, and nicotine. Substance-induced mood, anxiety, and psychotic presentations are common, and steroids, stimulants, and even high-dose caffeine mimic primary disorders.

Gate 4: mania screening before any depression referral

Every depressed client gets screened for lifetime mania or hypomania before an antidepressant referral, because an antidepressant alone can destabilize bipolar disorder. Ask about distinct periods of decreased need for sleep with unusual energy, spending, or plans. The MDQ helps but a 2024 meta-analysis puts its sensitivity near 0.62: it misses a third of true bipolar cases, so history beats the checkbox.