Mumbai, Oct 26: A 60-year-old man was brought to the OPD after developing sudden difficulty remembering recent events. Unlike the commonly recognised signs of stroke, he had no weakness, speech difficulty or other obvious neurological deficit, making the cause of his sudden memory loss difficult to identify initially.
The family initially thought the memory disturbance could be related to stress and consulted a psychiatrist. However, the sudden onset of memory loss was a red flag, prompting further neurological evaluation.
According to Dr Sheetal Goyal, Consultant Neurologist, Wockhardt Hospitals, Mumbai Central, an MRI of the brain was immediately advised to investigate the sudden change in memory. The scan revealed an isolated infarct involving the anterior nucleus of the thalamus, explaining the patient’s acute memory disturbance.
“Sudden memory loss should not always be attributed to stress or psychological factors, particularly when it develops abruptly. In this case, the absence of weakness or speech difficulty could have made a stroke less obvious, but the sudden onset was an important red flag. The MRI helped identify an isolated infarct in the anterior thalamic region, which explained the patient’s memory disturbance,” said Dr Goyal.
The case highlights that stroke does not always present with weakness. Depending on the area of the brain affected, a stroke can present with sudden isolated memory loss, visual disturbances, behavioural or personality changes, difficulty speaking or understanding language, dizziness or imbalance, or sudden numbness and other sensory disturbances.
The sudden onset of a neurological symptom is an important warning sign and should not be ignored. Early medical assessment and appropriate brain imaging can help identify stroke even when the presentation is unusual or does not involve the commonly recognised symptoms.
“Every minute matters in stroke. Any sudden, unexplained change in memory, vision, speech, behaviour, balance or sensation warrants urgent medical evaluation. Recognising these less typical presentations can help ensure that patients receive timely neurological care,” added Dr Goyal.