A chronic headache is always a disease. It always means something is wrong.
El dolor de cabeza, lejos de ser una molestia menor que soportar en silencio, es siempre la señal de un organismo que comunica un desequilibrio. Neurólogos chilenos advierten que normalizar el dolor crónico equivale a ignorar el lenguaje del cuerpo, y que distinguir entre cefaleas primarias —las más frecuentes y manejables— y secundarias —las menos comunes pero potencialmente letales— puede marcar la diferencia entre una vida gestionada y una emergencia no atendida. En un contexto donde la automedicación es hábito extendido, la ciencia médica llama a escuchar con más atención lo que el dolor intenta decir.
- El 90% de los dolores de cabeza son cefaleas primarias como la migraña o la tensional: crónicas, debilitantes, pero no mortales; el 10% restante puede esconder tumores, hemorragias o meningitis.
- La normalización cultural del dolor es el mayor obstáculo: millones de personas conviven con cefaleas recurrentes convencidas de que eso es simplemente su vida, sin saber que están ignorando una enfermedad.
- Señales de alarma concretas —el dolor explosivo que alcanza su pico en segundos, el que despierta de noche, el que viene acompañado de debilidad, alteraciones del habla o pérdida de conciencia— exigen atención de urgencia inmediata.
- La automedicación con analgésicos de venta libre puede agravar el cuadro con el tiempo, y el uso de ergotamina sin supervisión genera dependencia y cefaleas de rebote cada vez más intensas.
- El camino hacia la resolución pasa por la evaluación especializada: solo un neurólogo puede clasificar el subtipo exacto de cefalea y prescribir el tratamiento preventivo o agudo adecuado para cada caso.
Para los neurólogos chilenos, el dolor de cabeza nunca es trivial. El Dr. Sergio Juica Cabello, del Hospital Guillermo Grant Benavente y la Universidad de Concepción, lo explica con claridad: toda cefalea es el síntoma de algo más, una señal de que el cuerpo está fallando en algún punto. El problema es que la sociedad ha aprendido a ignorarla.
Las cefaleas se dividen en dos grandes grupos. Las primarias —migraña, tensional y afines— representan cerca del 90% de los casos. Son crónicas, recurrentes y deterioran la calidad de vida, pero no son fatales. Las secundarias, menos del 10%, son otra historia: detrás de ellas puede haber tumores, malformaciones vasculares, hemorragias, accidentes cerebrovasculares o meningitis. Estas últimas no admiten demora.
Juica señala que el mayor obstáculo es la normalización. Pacientes que llevan décadas con dolores de cabeza frecuentes llegan a la consulta convencidos de que así son ellos, sin comprender que una cefalea crónica es, por definición, una enfermedad. Hay señales que no deben ignorarse: el dolor que estalla en segundos alcanzando su máxima intensidad —la llamada cefalea en trueno—, el que persiste días o interrumpe el sueño, y cualquier dolor acompañado de síntomas neurológicos como debilidad en extremidades, alteraciones del habla o pérdida de conciencia. Ante cualquiera de estos signos, la urgencia es la única respuesta correcta.
El tratamiento no es universal. El farmacólogo Pedro Novoa Gundel advierte que los analgésicos comunes, usados con frecuencia, pueden provocar cefalea por sobreuso. Más preocupante aún es el caso de la ergotamina: este principio activo, presente en algunos medicamentos para la migraña, actúa contrayendo los vasos sanguíneos, pero el organismo se adapta y responde con vasodilatación masiva, generando cefaleas más intensas y frecuentes. Novoa observó este patrón directamente en farmacias, donde estos fármacos se dispensaban sin el control adecuado.
La prevención tiene su propio lugar: gestionar el estrés, dormir bien, hidratarse, evitar el alcohol en exceso. Algunos medicamentos preventivos existen, pero están reservados para casos extremos y no funcionan como analgésicos convencionales. La conclusión de ambos especialistas es la misma: ante una cefalea persistente o inusual, la automedicación es un riesgo que no vale la pena correr.
A headache is never just a headache. That's the message neurologists in Chile are pushing hard against a culture of self-diagnosis and casual acceptance of chronic pain. When someone walks into a doctor's office complaining of head pain, they're describing a symptom of something else—a malfunction, an imbalance, a signal that the body is trying to send. The distinction matters more than most people realize.
Dr. Sergio Juica Cabello, a neurologist at Hospital Guillermo Grant Benavente and faculty member at the University of Concepción's School of Medicine, explains that headaches fall into two broad categories. The first group, primary headaches, accounts for roughly nine out of every ten cases. These are conditions rooted in how the brain itself functions—migraines, tension headaches, and related disorders. They tend to be chronic, recurring, and they wear on quality of life, but they don't kill you. The second group, secondary headaches, represent less than ten percent of cases but carry far more weight. These emerge from structural problems inside the skull: tumors, malformations, bleeding, stroke, meningitis. These are the ones that demand immediate attention.
The real problem, Juica observes, is normalization. Patients come in having lived their entire lives with regular headaches, convinced that everyone suffers the same way, that they simply happen to have a bit more than average. This thinking misses the point entirely. A chronic headache is always a disease. It always means something is wrong. The pain isn't the illness itself—it's the announcement of one.
Some warning signs demand urgent care. A headache that arrives suddenly, explosively, reaching peak intensity within seconds—neurologists call this a thunderclap headache, and it's a reason to go to the emergency room immediately. So is pain that refuses to fade, that wakes you at night, that persists for days. The same applies when a headache arrives alongside other neurological symptoms: weakness in an arm or leg, speech problems, permanent changes in vision, difficulty walking, or altered consciousness. These combinations point toward something structural, something that needs imaging and specialist eyes.
Treatment depends entirely on what type of headache a person has, which is why Juica emphasizes the necessity of professional evaluation. A neurologist needs to categorize not just the broad type but the specific subtype, then match it to the right intervention. Pain relievers seem obvious, but they're deceptive. For some patients, regular use of over-the-counter analgesics actually makes headaches worse over time. Other triggers—dehydration, heat exposure, jaw problems, heavy alcohol use—can be managed symptomatically once identified.
Prevention works differently than treatment. Lifestyle measures matter: managing stress, eating well, exercising, sleeping properly. These reduce how often headaches strike and how severe they are. Some medications prevent headaches from occurring, though these are not the same as painkillers. Taking a paracetamol when you have no pain accomplishes nothing, explains Pedro Novoa Gundel, a pharmacologist and faculty member at the same university. Preventive medication is reserved for patients in extreme situations—those in pain management programs or facing terminal illness.
Migraines with aura create particular anxiety. These headaches come with temporary neurological symptoms lasting anywhere from five to sixty minutes, typically around thirty. A patient might see flashing lights, cloudiness, or lose vision to one side. Others experience tingling or numbness across half the face, half the tongue, or half the body. Rarer still is aura involving speech disturbance. The timing matters: if someone senses an attack coming and takes a painkiller beforehand, medication levels in the bloodstream will already be present when the acute pain arrives.
Then there's the ergotamine problem. This active ingredient in certain migraine medications works by constricting blood vessels in the central nervous system, which can provide relief because headaches often involve blood vessel dilation. But the body adapts. Over time, it responds to ergotamine with massive vessel dilation, making headaches stronger and more frequent. Patients need higher doses to achieve the same effect, and eventually the medication stops working altogether. Novoa observed this pattern directly while working in pharmacies—these drugs were being sold without adequate oversight, and patients kept returning needing stronger doses. Both specialists now urge anyone with persistent headaches to see a professional rather than self-treat, because the wrong medication can make everything worse.
Citas Notables
Patients have lived their entire lives with regular headaches, convinced that everyone suffers the same way, but a chronic headache is always a disease.— Dr. Sergio Juica Cabello, neurologist
Over time, the body responds to ergotamine with massive vessel dilation, making headaches stronger and more frequent, requiring higher doses until the medication stops working altogether.— Pedro Novoa Gundel, pharmacologist
La Conversación del Hearth Otra perspectiva de la historia
Why do neurologists insist that every headache signals disease? Isn't that overstating it?
Because it's literally true. A headache is a symptom, not a diagnosis. Something is causing it—whether that's how your brain is wired, stress, dehydration, or something serious. Ignoring that distinction is how people end up living with preventable suffering.
But most people get occasional headaches and they're fine.
That's the normalization problem. People assume everyone has them constantly, so they stop reporting it, stop seeking help. But chronic headaches aren't normal. They're a sign something needs attention.
What's the difference between a headache you can ignore and one you can't?
Sudden, explosive pain that peaks in seconds—that's a thunderclap. Pain that won't stop, wakes you up, lasts for days. And anything with other neurological symptoms: weakness, speech problems, vision changes, balance issues. Those need emergency evaluation.
So if I take a painkiller before a migraine hits, that's smart?
It can be. If you sense an attack coming, having medication in your system before the acute pain arrives might help. But regular painkiller use is dangerous. Your body adapts, and the medication can actually make headaches worse and more frequent over time.
How does that happen?
Some migraine drugs constrict blood vessels. Your body responds by dilating them massively. The headaches get stronger, you need higher doses, and eventually the drug stops working at all. That's why self-medication without a specialist is risky.
What actually prevents headaches, then?
Lifestyle first: stress management, good sleep, exercise, proper nutrition. Those reduce frequency and intensity. Some medications prevent headaches from occurring, but those are different from painkillers. Taking a painkiller when you have no pain does nothing.