title: [Bayonet finger and the use of illicit drugs].
abstract: Prevalence of "bayonet finger", a semiologic sign of attention deficit and hyperactivity disorder (ADHD), was determined in male illicit drug users, admitted in psychiatric hospital. A control group, paired in sex, age and social status, was built from the general population. The sign was observed en 165/345 (47.8%) drug users and 13/50 (26%) controls, the difference being statistically significant. Bearers of this sign had 2.61 odds ratio, 1.84 relative risk and 92.7% probability for being drug users. The observations suggest that, for males: (1) ADHD and related syndromes should be present in approximately half of illicit drug users and should represent a vulnerability factor for becoming drug user; (2) individuals presenting "bayonet finger", mainly adolescent, should deserve special attention for prevention of drug use.
authors.affiliation: Hospital Espírita de Marília, Brasil.
authors.forename: P
authors.initials: P
authors.lastname: Borini
mesh_terms: D019958:Attention Deficit and Disruptive Behavior Disorders / Q000150:complications*; D016022:Case-Control Studies; D015984:Causality; D005385:Fingers / Q000002:abnormalities*; D006801:Humans; D008297:Male; D016017:Odds Ratio; D010641:Phenotype; D015995:Prevalence; D012959:Socioeconomic Factors; D019966:Substance-Related Disorders / Q000150:complications*