An upper motor neuron lesion involves which dosha in which dhatu?

• A. Vata in majja dhatu
• B. Pitta in majja dhatu
• C. Kapha in majja dhatu
• D. Rasa in majja dhatu

Answer: (B)

In this area, nervous tissue is tied to majja dhatu, and movement disorders arise when this tissue is disturbed by a specific dosha. An upper motor neuron lesion manifests as increased muscle tone, brisk reflexes, and spastic signs because the normal inhibitory control from higher centers on the motor pathways is lost. In Ayurvedic terms, this pattern is described as pittaja majja vyadhi—the nervous tissue (majja) affected by Pitta. Pitta brings heat, inflammation, and rapid transformation, so its involvement in majja dhatu fits a scenario where the nerve conduction and excitability of motor pathways are irritated and dysregulated, leading to the characteristic UMN signs.

Choosing pit­ta in majja dhatu over the other combinations aligns with the clinical picture: Vata in majja would more typically correspond to features like numbness, dryness, and erratic or ataxic movement due to vata’s mobile, irregular nature. Kapha in majja would imply heaviness, dullness, or sluggishness in the nervous tissue, not the brisk, hyperactive motor signs seen with upper motor neuron lesions. Rasa in majja isn’t the usual pairing for a localized, inflammatory-nervous-system presentation either.