Nonambulatory persons with profound mental retardation: physical, developmental, and behavioral characteristics.

Brown et al. (1994) looked at 203 adults who could not walk and had profound intellectual disability. The team wrote down each person's medical, motor, and behavior details. No treatment was tested; they just wanted a clear picture.

Every adult worked at a developmental level below a one-year-old. Most had seizures, bone problems, or self-injury. The group showed huge differences in sight, hearing, and mood, yet all needed total help with daily tasks.

Horovitz et al. (2011) later tracked the same population for a year and found that psychiatric symptoms usually stay the same, so the snapshot H gives still holds true over time.

Farrant et al. (1998) showed that about 15% of adults with severe or profound ID also meet ADHD criteria, adding another layer to the medical picture H described.

Katz et al. (2003) warned that most drug studies in this population are weak, so when you see high medication use in H's sample, you should question the evidence behind it.

Whiteside et al. (2022) added that challenging behavior drops as emotional age rises, helping explain why behaviors differ so much within H's low-functioning group.

If you serve nonambulatory clients with profound ID, expect infant-level skills plus many medical and psychiatric add-ons. Use the data to plan for nursing, physio, and behavior teams all at once. Screen for ADHD and track emotional age to fine-tune behavior plans, and always review meds against the weak evidence base.