A Clinician's Guide to Using Light Therapy - Paperbackby Raymond W. Lam (Author), Edwin M. Tam (Author) Light therapy is an effective, evidence based, non pharmacological treatment for seasonal affective disorder (SAD) and other depressive and circadian sleep conditions. This step by step guide helps busy mental health clinicians and other health professionals to better diagnose SAD and incorporate light therapy into their everyday clinical practice. The authors summarize the diagnostic process, describe