Headaches are one of the most common health issues people experience, often dismissed as a minor inconvenience caused by stress, lack of sleep, or dehydration. While many headaches fade on their own, persistent or unusual ones can sometimes be a warning sign of serious underlying conditions. Ignoring these red flags may delay timely diagnosis and treatment, putting your health at risk. Neurologist and general physician Dr. Priyanka Sehrawat, who completed her doctorate in neurology at AIIMS, recently shared an Instagram video highlighting five types of headaches that should never be ignored and when to seek urgent medical attention. Serious causes of headaches: Neurologist shares signs you must not overlookChange in headache pattern or intensityAccording to Dr. Sehrawat, if your headaches were earlier mild and infrequent but have recently changed in frequency, intensity, or nature, it is a clear signal to seek medical advice. She explains that this includes pain affecting the entire head, a band-like tight sensation, sudden severe vomiting, or headaches that become progressively more frequent. Such changes may point towards underlying neurological conditions, raised brain pressure, or structural lesions in the brain.People often dismiss worsening headaches as a result of stress or overexertion, but a shift in the character of your headache is one of the biggest red flags. Consulting a neurologist in time can help rule out dangerous conditions like brain bleeds, aneurysms, or tumours.Visual disturbances and ringing in the earsAnother serious symptom Dr. Sehrawat highlights is headaches accompanied by visual changes. This can include blurred vision, double vision, reduced eyesight, or the loss of side (peripheral) vision — often described as a curtain closing across the eyes. She also warns that a ringing or buzzing sound in the ears, when combined with headaches, may indicate increased brain pressure.Raised intracranial pressure is a medical emergency that can affect the brain and spinal cord if left untreated. If you experience persistent headaches along with vision problems or ringing in the ears, immediate neurological evaluation is necessary.Headache with fever, neck stiffness, or vomitingWhen headaches are associated with fever, neck stiffness, and repeated vomiting, it could point to serious infections or inflammatory conditions in the brain. Dr. Sehrawat explains that these symptoms may indicate meningitis, encephalitis, or even lesions that raise brain pressure. Unlike regular headaches caused by lifestyle factors, these are dangerous signs that must not be ignored. Immediate medical attention is crucial, as early diagnosis and treatment can prevent severe complications, permanent neurological damage, or life-threatening outcomes, making it essential to recognise and respond to these warning signs promptly.A brain infection can progress rapidly and cause long-term complications if not treated promptly. Seeking medical attention as soon as these symptoms appear is crucial to prevent further damage.New-onset headache after the age of 50For most people, headaches begin earlier in life due to stress, eye strain, or migraines. However, if someone above the age of 50 suddenly develops frequent and severe headaches, Dr. Sehrawat advises immediate medical evaluation.Headaches starting later in life are more likely to be linked with serious issues such as temporal arteritis (inflammation of blood vessels in the head), strokes, or even undiagnosed tumours. Unlike younger individuals who may develop benign headaches, those in this age group should never dismiss new headache patterns. Early detection can make treatment more effective and potentially life-saving.Headache with weakness or numbness in limbsThe final symptom Dr. Sehrawat mentions is headaches that occur along with weakness, numbness, tingling, or loss of sensation in the arms and legs. If headaches are accompanied by difficulty walking, problems with balance, or sudden weakness, it may signal a brain lesion, stroke, or other neurological disorders.These symptoms often indicate that the brain’s motor or sensory pathways are being affected. Ignoring them can lead to long-term disability or irreversible damage. If you ever experience such symptoms with a headache, urgent medical care is essential.Headache symptoms that require urgent doctor consultationWhile occasional headaches due to stress or dehydration are usually not a cause for concern, the red flags highlighted by Dr. Sehrawat should never be ignored. Her Instagram video serves as an important reminder that headaches are not always harmless.Seek medical attention immediately if you experience:A sudden change in the nature or intensity of headachesVision problems or ringing in the ears with headachesHeadaches associated with fever, neck stiffness, or vomitingNew headaches after the age of 50Headaches with weakness, numbness, or loss of balanceHeadaches are common, but not all are routine. As Dr. Priyanka Sehrawat explains in her Instagram video, certain types of headaches may point to infections, raised brain pressure, or neurological issues that require urgent medical attention. Listening to your body and seeking timely care can help prevent complications and protect your overall health.Disclaimer: This article is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider regarding any medical condition or lifestyle change.Also Read: AIIMS gastroenterologist reveals 10 gut-friendly snacks for daily health and digestion