Efficacy of Photobiomodulation on Core Symptoms of Autism

Autism spectrum disorder (ASD) is a complex neurodevelopmental condition typically characterized by social and communicative problems as well as repetitive patterns of behaviour. Photobiomodulation is non-invasive exposure of light, typically within the red to near-infrared spectrum, to elicit physiological effects across several tissue systems. This study is designed as a randomized controlled trial to assess the effect of Photobiomodulation on core symptoms of autism spectrum disorder. Participants will be recruited from outpatient clinic of faculty of physical therapy at Cairo University. The intervention protocol includes that the child is in supine lying position with eyes covered with sheet. Each participant started with a 2 min treatment. Participants who tolerated the treatment well received incrementally larger doses (2 min) in each of 5 subsequent sessions, for a maximum dose of 12 min. Two groups of children each received a random assignment. after being selected from outpatient clinic of faculty of physical therapy. Both groups (A and B) participated in physical treatment for three months; group A had designed physical therapy, occupational therapy and speech program, whereas group B had the same designed physical therapy, occupational therapy and speech program in addition to Photobiomodulation.