What is Smith-Magenis Syndrome?
The medical definition defines it as an interstitial or partial deletion of chromosome 17p11.2. It is a chromosomal disorder recognized by physical, behavioral and developmental characteristics.

In a nut shell, Ben's chromosome make-up has a small piece of genetic material missing from chromosome 17. From what researchers can tell, this happens at conception and is a sporadic event. There are only about 600 people in the world diagnosed with Smith-Magenis Syndrome at this time.

To get a complete list of characteristics, please visit the PRISMS (Parents and Researchers Interested in Smith-Magenis Syndrome) website at www.prisms.org

4 Paws 4 Ben
Characteristics of SMS that Ben has:

  • Severe sleep disturbances (reversed circadian rhythm), night terrors
  • Self injurious behaviors (head butting, punches self) several times a day
  • Low muscle tone, slow to develop physically, still doesn't speak too well, uses sign language as main form of communication
  • Developmentally delayed
  • Hearing impaired, attends the school for the deaf
  • ASD (Heart Murmur)
  • Severe constipation
  • Frequent aspiration, leads to bronchitis and pneumonia, chokes easily
  • Low Immune system
  • Possible HNPP, Nerve disorder
  • Chronic ear infections (3 sets of tubes and Mastoidectomy)
  • Delayed toileting skills, still wears diapers
  • Exceptional memory
  • Extremely affectionate with everyone he meets
  • Great sense of humor


Due to all the different medical issues, these are the specialists we work with:

  • Pediatrician
  • Otolaryngologist  (ENT)
  • Sleep Specialist
  • Pulmonologist
  • Cardiologist
  • Gastroenterologist
  • Neurologist
  • Geneticist
  • Opthamologist
  • Psychologist
  • Psychiatrist
  • Behaviorist
  • Occupational Therapist
  • Physical Therapist
  • Speech Therapist