Parkinson’s Disease Specific Anxiety Inventory (PDSAI)
A tool to capture and define triggers of anxiety in Parkinson’s disease.

Parkinson’s Disease Specific Anxiety Inventory (PDSAI)
A tool to capture and define triggers of anxiety in Parkinson’s disease.
Anxiety disorders are common in Parkinson’s disease.1
Research suggests nearly one third of people living with Parkinson’s disease have an anxiety disorder, which is four times greater than the general public.2
Factors triggering anxiety in people with Parkinson’s are often unique, and are not captured by traditional anxiety scales.3
The Parkinson’s Disease Specific Anxiety Inventory (PDSAI) is the first validated screening tool to capture these triggers.4
Use of the PDSAI is intended for health professionals for more precise targeting of anxiety treatment in people with Parkinson’s disease. It is also intended for researchers as an outcome measure for treatment efficacy in clinical trials.
The PDSAI is a 40-item yes/no self-report questionnaire.
It is time friendly, with an estimated completion time of 10-15 minutes.
The PDSAI was developed and validated by a clinician-researcher team with expertise in Parkinson’s disease anxiety. Design input was also received from people living with Parkinson’s disease.
It has been shown to correlate well with other clinical scales of anxiety such as the Parkinson’s Anxiety Scale (PAS), and the Hamilton Anxiety Scale (HAM-A).4
At this time, the PDSAI is available only in English.
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expand_more library_books References (4)
- Pontone, G. M., Dissanayaka, N., Apostolova L., Brown, R. G., Dobkin, R., Dujardin, K., Friedman, J. H., Leentjens, A. F., Lenze E. J., & Marsh, L. (2019), Report from a multidisciplinary meeting on anxiety as a non-motor manifestation of Parkinson’s disease. npj Parkinson’s Disease, 5(1), 30.
- Broen, M. P., Narayen, N. E., Kujif, M. L., Dissanayaka N. N., & Leentjens, A. F. (2016), Prevalence of anxiety in Parkinson’s disease: a systematic review and meta-analysis. Movement Disorders, 31(8), 1125-1133
- Dissanayaka, N. N., O’Sullivan, J. D., Pachana, N. A., Marsh, R., Silburn, P. A., White, E. X., Torbey, E., Mellick G. D., Copland, D. A., & Bryne, G. J. (2016), Disease-specific anxiety symptomology in Parkinson’s disease. INTERNATIONAL PSYCHGERIATRICS, 28(7), 1153-1163.
- Dissanayaka, N. N., Pourzinal, D., Byrne, G., Pachana, N. A., O’Sullivan, J. D., White, E., Au, T., Yang, J., Interian, A., & Rodriguez, K. (2025), Development and Validation of the Parkinson’s Disease Specific Anxiety Inventory (PDSAI). Journal of Geriatric Psychiatry and Neurology.
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expand_more cloud_download Supporting documents (1)Product brochureParkinson’s Disease Specific Anxiety Inventory (PDSAI).pdfAdditional files may be available once you've completed the transaction for this product. If you've already done so, please log into your account and visit My account / Downloads section to view them.