Key Points

Persons with Intellectual Development Disabilities (IDD) are aging at a rapid rate.  Adults with intellectual disabilities have intellectual functional limitations that occur prior to the age of 18 years.  Adults with developmental disabilities have functional limitations in 3 or more areas of life activity (self-care, language, mobility, self-direction, capacity for independent living).  Constipation is a major medical conditions that commonly is seen among persons with IDD and may lead to serious complications.  Learn more about this condition.


Aging Persons with Intellectual Developmental Disorders (IDD): Constipation Handout

Aging Persons with Intellectual Developmental Disorders (IDD) Powerpoint Presentation


Health guidelines for adults with an intellectual disability. Available at:

Lewis SJ, Heaton KW (1997). Stool form scale as a useful guide to intestinal transit time. Scand. J. Gastroenterol. 32 (9): 920–4. doi:10.3109/00365529709011203.PMID 9299672.

Office of Training and Professional Development (2011, October 15). The Fatal Four: Constipation: A Major Challenge that Impacts People with Developmental Disabilities. Division of Developmental Disabilities Services 4(9), pp 1-2.

Schalock, RL, Borthw9ck-Duff, SA, Bradley VJ, et al. (2010). Intellectual Disability: Definition, Classification and Systems of Supports. (11th ed). Washington DC: American Association on Intellectual and Developmental Disabilities.

Smith, MA, & Escude, CL (2015). Intellectual and Developmental Disabilities. The Clinical Advisor, February:49-58.