|SPD and Other Disorders| When two disorders co-exist in one
person, the phenomenon is known as "comorbidity." The SPD
Foundation has sponsored and conducted a number of studies into
the comorbidity of SPD with other common childhood disorders
such as ADHD, autistic spectrum disorders including Asperger's,
Fragile X Syndrome, Prader-Willi Syndrome, and other diagnoses.
SPD and ADHD Scientists and parents alike are keenly interested
in understanding the relationship between SPD and Attention
Deficit Disorder (ADHD), a better-known condition that is
frequently treated with medication. Although the neurological
basis of the two disorders is different, children with the
sensory-seeking subtype of SPD are especially likely to be
diagnosed and treated for ADHD because their behaviors are
similar to behaviors in children with Attention Deficit
Disorder. Studies by SPD Foundation suggest that SPD and ADHD
are unique disorders, each with its own distinct symptoms. This
means that SPD is not simply a type of ADHD, and