title: [Observations of tolerance of bright light treatment in psychiatry].
abstract: Bright light (BL) treatment is a new biological treatment used in psychiatry. The probable mechanisms of action of BL treatment are synchronisation of biological rhythms and increase of serotonin transmission in the human brain. The main indication for BL treatment is seasonal affective disorder (SAD). Indications, tolerance and mechanism of action of BL treatment are still under exploration.
  
  
  OBJECTIVE
  To present 3 years of experience from the treatment of different psychiatric disorders with BL.
  
  
  METHODS
  The examined group consisted of 104 out-patients with different diagnoses. The mean age was 41.1 and the mean number of sessions of BL treatment was 17.2. Besides-of BL treatment (1 hour, 5000 lux) the patients were treated with psychotropic drugs. Side effects and BL tolerance were observed.
  
  
  RESULTS
  Side effects were present in 34 (32.6%) patients. They were: tearsing (11.5%), headaches (6.7%), restlessness and agitation (5.7%), eyeball pain (3.8%) and eye burning (4.8%). Tearsing and eyeball pain subsided in the first 15 minutes, the other symptoms subsided by 1 hour after a session. Six patients discontinued the BL treatment due to intolerance of a side effect.
  
  
  CONCLUSIONS
  BL treatment is a safe and well-tolerated form of biological treatment in psychiatry. The absence of a control group limits the specificity of these side effects. New indications for BL treatment may include psychiatric disorders with brain serotoninergic system or biological rhythms disturbances.
authors.affiliation: Katedra i Klinika Psychiatrii i Psychoterapii Slaskiej AM, Katowicach.
authors.forename: Marek
authors.initials: M
authors.lastname: Krzystanek
authors.forename: Irena
authors.initials: I
authors.lastname: Krupka-Matuszczyk
authors.forename: Kamilla
authors.initials: K
authors.lastname: Bargiel-Matusiewicz
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000628:therapy*; D008875:Middle Aged; D010789:Phototherapy / Q000009:adverse effects* / Q000379:methods*; D011044:Poland; D012189:Retrospective Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome