Demyelination disrupts nerve signals, causing symptoms from numbness to fatigue. "Dissemination in time and space" is the clinical rule that these attacks must happen in different neural areas at different times. As for it being less common in India, my data on South Asian genetics shows we cannot simply blame latitude or vitamin D; our immune system's architecture, shaped by millennia of local pathogens, plays a far more protective role. I know this because I hold the threads of family histories in my lab, tracing lineages where MS appears, and its pattern is never just about geography—it’s woven into our very DNA, much like the distinct *mettu* in my grandfather’s loom.
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