Sensory processing disorder (SPD) can often be misdiagnosed as autism spectrum disorder or ADHD. There are differences in the brains of people with SPD differ in certain areas than those with autism spectrum disorder and ADHD. One in twenty people may have SPD which has a wide range of symptoms including increased sensitivity to light, touch, or sound, and being easily distracted. The article also contains many facts about SPD and red flags to look for if you think your child may have SPD.