In India, stroke has quietly emerged as a major public-health challenge. A recent analysis estimates that the number of people living with stroke in India rose from around 4.4 million in 1990 to about 9.4 million in 2021 — representing nearly a 47 % increase. Down To Earth+2PubMed Central+2 At the same time, new incident cases of stroke are estimated at more than 1.25 million in 2021 alone — accounting for roughly 10 % of the global burden of stroke. Down To Earth+2PubMed Central+2

In terms of annual incidence rates, population-based studies in India show that the cumulative incidence of stroke ranges from about 105 to 152 per 100,000 persons per year. PubMed Central+2PubMed+2 Crude prevalence estimates (i.e., number of people who have ever had a stroke) in different regions have ranged widely, from as low as 44.3 per 100,000 to as high as 559 per 100,000 persons according to older surveys. PubMed Central

Because these are per-100,000 numbers, when you scale to India’s large population, the absolute number of people at risk and affected becomes substantial.

Who is being affected – key demographics
Several patterns are emerging in India’s stroke epidemiology. A meta-analysis found that around 64.5 % of stroke patients were male and about 75.2 % of strokes occurred in people aged over 50 years. Lippincott Journals+1 The predominant subtype in India is ischemic stroke (blockage type) rather than hemorrhagic. Lippincott Journals+1

Importantly, although strokes are more common in older age groups, India seems to be observing strokes in younger people more frequently than in high-income countries. For example, one review noted that nearly one-quarter of stroke patients in India are under the age of 50. Lippincott Journals+1 In addition, urbanisation, lifestyle changes, rising diabetes and hypertension, and other risk factors such as obesity and dyslipidaemia are contributing to this shift. Nature+1

To summarise: stroke in India is common, rising, affects men slightly more than women, is concentrated in people over 50, but increasingly seen in younger adults, and is primarily of the ischemic type.

When Stroke Symptoms Mimic Something Else: The Chikungunya Surprise
Given how common stroke has become, any sudden neurological symptom—such as weakness of a limb, slurred speech, facial droop, or imbalance—is typically considered a medical emergency and evaluated rapidly for stroke. However, one challenge for clinicians is that some conditions can mimic a classical stroke presentation—and one such under-recognised culprit in India is the viral infection Chikungunya fever (caused by the chikungunya virus, CHIKV).

Chikungunya is characterised by an acute onset of fever, severe joint pain, body aches, and a rash. But in rare cases, neurological complications are well described: these may include meningoencephalitis, myelitis, peripheral neuropathies and other manifestations. IJCCM+2PubMed Central+2 A recent article warned that in rare cases the virus “can affect the brain, causing sudden imbalance and unsteady walking” — symptoms that “initially … look very much like a stroke”. Moneycontrol

Why is this confusing? Because symptoms such as sudden unsteadiness, dizziness, imbalance, or even focal neurological deficits may prompt clinicians and patients to think “stroke,” whereas the underlying mechanism may be viral and reversible. The MRI findings, clinical timeline and absence of classical stroke risk factors (or presence of preceding viral-illness) may help distinguish the two—but the urgency remains real because time to treatment is critical in stroke.

Case Study: “From Mild Fever to Sudden Imbalance” – A Real-Life Example
The story from Wockhardt Hospitals in Mumbai (October 2025) illustrates how this mimicry can play out in confusing ways: A man in his 50s walked in after three days of severe imbalance, unable to stand upright and feeling as if the ground were shifting beneath him. What seemed like a classic stroke presentation triggered immediate evaluation.

His consultant neurologist, Dr Sheetal Goyal, found that his blood pressure and sugar levels were under control , which reduced immediate suspicion of the usual stroke risk factors. An MRI scan was done to rule out a stroke—but instead of the expected infarct or bleed, the scan revealed a rare white-matter lesion in the splenium of the corpus callosum (the region connecting the two brain hemispheres). According to Dr Goyal: “This pattern is extremely rare … It can occur in certain viral infections or metabolic disturbances, and catching it early is critical for recovery.”

On further review, she uncovered a clue: a mild, short-lived fever a few days before the imbalance began. That prompted testing for chikungunya, which came back positive — and, in this case, the viral infection presented only with neurological symptoms, with no typical joint pain or body aches. The neurology team promptly initiated steroid therapy, and within three days the patient showed remarkable improvement; a week later, his balance and coordination had returned to normal.

Dr Goyal reflected: “This case reminds us that not every episode of sudden imbalance or dizziness is a stroke. Sometimes, a simple viral infection can affect the brain, and with timely diagnosis, it’s completely reversible.” What could have become a life-altering neurological crisis turned into a story of complete recovery thanks to swift thinking, precise diagnosis, and expert multidisciplinary care.

Implications for Clinical Practice and Public Health
This case and the broader epidemiology highlight several important take-home messages:

First, given how common stroke is becoming in India and how disabling it can be, any sudden neurological symptom such as focal weakness, imbalance, slurred speech or altered gait must trigger immediate work-up for stroke: rapid clinical assessment, neuroimaging (CT/MRI), and stroke-pathway activation.

Second, clinicians and patients alike must be alert to stroke mimics, including infectious causes like chikungunya (and others such as dengue, herpes, etc). The viral infection may not present in the classic way (high fever, arthralgia) but may affect the nervous system subtler or atypically. In such cases, the MRI patterns and clinical history (recent viral prodrome) may help distinguish these from classical vascular stroke.

Third, the public health dimension: the rising incidence and prevalence of stroke in India underscore the critical need for prevention. Controlling hypertension, diabetes, dyslipidaemia, promoting a healthy lifestyle (physical activity, diet, weight management), reducing smoking and alcohol misuse—all these will reduce stroke risk. Several reviews in India suggest a high proportion of strokes are potentially preventable. Nature

Fourth, attention must also be directed toward younger populations. Although the majority of strokes occur in those above 50, a significant minority are younger, and given lifestyle changes in India (sedentary habits, processed food, rising metabolic disorders), younger onset is increasingly seen. The mimicry of stroke by infections further complicates the picture.

Finally, from a clinical systems perspective, the ability to rapidly distinguish between stroke and stroke mimic (such as in the case above) requires access to imaging, trained neurologists, a high index of suspicion and protocols for rapid decision-making. Time is brain in stroke, but so is rapid diagnosis it mimics—because if misdiagnosed, patients may miss the correct therapy (such as steroids for a viral neurological syndrome) and may suffer worse outcomes.

Conclusion
In India today, stroke represents a growing silent epidemic: rising numbers, significant disability and mortality, and shifting demographics. At the same time, unusual presentations such as viral-induced neurological syndromes (for example, due to chikungunya) remind us that not all sudden neurological deficits are vascular. The case from Wockhardt Hospitals underscores the life-changing difference that timely diagnosis, multidisciplinary care and an open clinical mind can make. For health-care professionals, policy-makers and the general public alike, the message is clear: act fast, think broadly and invest in both prevention and precision diagnosis.