title: Patient information. Seasonal affective disorder.
mesh_terms: D006801:Humans; D008550:Melatonin / Q000502:physiology / Q000627:therapeutic use; D009722:Nurse Practitioners; D010789:Phototherapy / Q000379:methods*; D012307:Risk Factors; D016574:Seasonal Affective Disorder / Q000209:etiology / Q000517:prevention & control*; D012648:Self Care / Q000379:methods*; D012701:Serotonin / Q000502:physiology
chemical_list: D012701:Serotonin; D008550:Melatonin