The International Parkinson’s and Movement Disorder Society Non-motor group has developed and validated a monitoring tool for non-motor signs, the Non-Motor Symptoms Questionnaire (NMSQ).
It has 30 items and measures the presence or absence of these signs, from drooling of saliva to constipation, from pain to cognitive problems, from depression to hallucinations, from sleeping problems to double vision. It takes about 5 minutes to complete.