Research was published in the Journal of Attention Disorders to determine if sensory overresponsivity (SOR) impacts the hypothalamic pituitary adrenal axis in children with ADHD. Twenty four children with ADHD were divided into two groups (SOR and nonSOR) based on the Sensory Overresponsivity Inventory. The control group was 24 children without ADHD. Salivary cortisol samples were measured in all children twice before a sensory challenge protocol and 7 times after the sensory challenge. The results indicated a borderline significant difference found between the ADHD/SOR and ADHD/nonSOR group and a significant difference between ADHD/SOR and the typical group. The researchers concluded that perhaps SOR may be a variable in determining different subtypes of ADHD.
Reference: Reynolds, Stacey, Lane, Shelly J., Gennings, Chris
The Moderating Role of Sensory Overresponsivity in HPA Activity: A Pilot Study With Children Diagnosed With ADHD J Atten Disord 2010 13: 468-478