Sensory symptoms are most commonly treated with Occupational Therapy. Sometimes when parents are told about SPD, they may look at their child's behaviors differently, and gives them a different perspective. I recently came upon a great Sensory Processing Disorder Parent Support Group. Since I work with many kids who have SPD, I found this site helpful to buy products, share stories and learn about this disorder.
Check it out here: http://sensoryprocessing.yolasite.com/helpful-links.php