Nature and development of Huntington disease in a nursing home population: The Behavior Observation Scale Huntington (BOSH).

Objective: The Behavior Observation Scale Huntington (BOSH) was developed to obtain a detailed description of the manifestation of Huntington disease (HD) in the final stages.

Background: The Unified Huntington's Disease Rating Scale (UHDRS), developed to assess Huntington patients' clinical capacities, does not differentiate adequately in later stages of the disease. A scale easy to administer by nursing personnel for progression of the disease in later stages was needed.