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Kurtzke Disability Status Scale (DSS) clearly has its shortcomings. First, some read it to suggest a typical progression of the disease from number 1 to 2, then 2 to 3, and so on to death. Also, there are many exceptions to the scale. For example, many people who require a cane for walking may be active and working and only have a mild disability, yet their 6 DSS rating doesn't accurately reflect this.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.