Sensory processing disorder (SPD) means that you have trouble processing input from your senses and responding appropriately. There are three overarching categories of SPDs.

  1. Sensory Modulation Disorderis one of the most common forms of SPD. It’s when someone is an under- or over-responder to sensory stimulation.

  1. Sensory Based Motor Disorder refers to movement-specific challenges. The body doesn’t adapt well to sensory input and things like small movements can be difficult.

  1. Sensory Perception/Discrimination Disorder is the inability to identify differences in objects, location, intensity or timing.