title: Pathogenesis of painful sickle cell crises.
mesh_terms: D000328:Adult; D000755:Anemia, Sickle Cell / Q000150:complications* / Q000453:epidemiology; D002980:Climate; D004219:District of Columbia; D005260:Female; D006801:Humans; D007238:Infarction / Q000209:etiology*; D009549:Nigeria / Q000208:ethnology; D009293:Opioid-Related Disorders; D010146:Pain / Q000209:etiology; D014661:Vasoconstriction