TTH stands for tension-type headache, the most common type of headache. It produces a pressing or tightening sensation on both sides of the head, often described as a band squeezing around the skull. Unlike migraines, TTH doesn’t throb, doesn’t get worse when you move, and rarely causes nausea. Headache disorders affect roughly 40% of the global population, and TTH is the most prevalent among them, often beginning during the teenage years and affecting women about 50% more than men.
What TTH Feels Like
The hallmark of a tension-type headache is mild to moderate pain on both sides of the head. It feels like steady pressure rather than pulsing or throbbing. Most people can continue their daily activities during an episode, though concentration and mood often suffer. Episodes can last anywhere from 30 minutes to several days.
TTH is categorized by how often it strikes. Episodic TTH occurs fewer than 15 days per month, while chronic TTH hits 15 or more days per month. That distinction matters because the two forms behave differently in the body and call for different treatment approaches.
How TTH Differs From Migraine
The easiest way to tell TTH apart from a migraine is movement. Migraine pain worsens when you move your head, walk up stairs, or bend over. TTH pain stays roughly the same regardless of activity. Nausea is the most common migraine symptom after head pain, but it’s not a feature of TTH. Migraines also tend to affect one side of the head and produce sensitivity to light or sound that’s severe enough to send you to a dark room. TTH can cause mild light or sound sensitivity, but not both at the same time, and it’s rarely debilitating in the same way.
What Causes It
For years, researchers debated whether TTH was a muscle problem or a brain problem. The current understanding is that it’s both, with the balance shifting depending on the person and how frequently the headaches occur.
On the muscle side, the tissues around the skull (the scalp, temples, jaw, and neck muscles) are measurably more tender in people with TTH than in people without it. That tenderness correlates directly with headache intensity and frequency: the more tender the muscles, the worse and more frequent the headaches. Inflammatory molecules in these tissues may sensitize local pain-sensing nerves, lowering the threshold for pain signals to fire.
On the brain side, the central nervous system gradually changes how it processes pain. In people with chronic TTH, the brain and spinal cord become hypersensitive, amplifying pain signals not just from the head but from the entire body. Researchers at the International Headache Society describe this as central sensitization: nerve fibers that normally dampen pain signals start amplifying them instead, and the areas of the body that can trigger pain expand. This central sensitization appears to be a key factor in why episodic headaches sometimes become chronic ones. In people with only occasional TTH, central pain processing tends to be normal.
Common Triggers
Physical and emotional stress are the most common triggers. That includes the obvious (a high-pressure deadline, financial worry, relationship conflict) but also subtler forms of physical stress that build up over hours:
- Poor posture and neck strain: hunching over a desk, looking down at a phone, or working in an awkward position for extended periods
- Eye strain: prolonged computer or screen use without breaks
- Jaw clenching or teeth grinding: often unconscious, especially during sleep or concentration
- Shoulder and upper back tension: from stress, cold environments, or repetitive tasks
- Poor sleep: not enough hours, inconsistent schedules, or unrefreshing sleep
Anxiety and depression also play a role. They don’t just accompany TTH; they actively lower the pain threshold and increase muscle tension, creating a feedback loop that makes headaches more frequent.
Treating an Active Headache
Standard over-the-counter pain relievers are the first-line treatment for an individual TTH episode. Acetaminophen (Tylenol), ibuprofen, naproxen, and aspirin all have solid evidence behind them. The choice between them comes down to personal preference and any other health conditions you have. Triptans (the go-to migraine drugs), opioids, and muscle relaxants are not recommended for TTH.
The critical thing to know about pain relievers and TTH is the risk of making things worse. Using simple painkillers more than 15 days a month, or combination painkillers more than 10 days a month, for three months or longer puts you at risk for medication overuse headache. This is a separate condition where the pain relievers themselves start causing headaches, trapping you in a cycle of taking more medication for more pain. Other factors that increase this risk include smoking, daily caffeine intake, obesity, and a history of substance use disorders.
Preventive Treatment for Chronic TTH
When TTH becomes frequent enough to disrupt your life, the goal shifts from treating individual headaches to reducing how often they happen. Preventive treatment becomes relevant for people experiencing headaches on most days of the month.
The best-studied preventive medication is amitriptyline, a tricyclic antidepressant used at much lower doses for headache prevention than for depression. It works by blocking the reabsorption of serotonin and norepinephrine, two brain chemicals involved in pain signaling. It’s typically taken one to two hours before bedtime because drowsiness is one of its main side effects. Other possible side effects include dry mouth, blurred vision, and weight gain, which lead some people to stop taking it.
Some antidepressants in the SSRI and SNRI classes have shown modest benefit in small studies, though the evidence is weaker. In head-to-head comparisons, amitriptyline generally outperforms them, and some alternatives only show results after two or more months of use.
If you’ve been relying on daily pain relievers, starting preventive therapy usually means stopping the painkillers first. That transition can be rough: several days to weeks of withdrawal symptoms including worse headaches, nausea, restlessness, and trouble sleeping. Some people taper off gradually over four to six weeks rather than stopping abruptly.
Non-Drug Approaches
Cognitive behavioral therapy, biofeedback, and relaxation training are often recommended alongside or instead of medication, particularly for people who prefer to avoid daily drugs or who have mild cases. These approaches target the stress and muscle tension that feed TTH. CBT helps identify and change the thought patterns and behaviors that contribute to chronic tension. Biofeedback teaches you to consciously relax specific muscle groups by showing you real-time data on muscle activity. Relaxation techniques like progressive muscle relaxation or diaphragmatic breathing can reduce baseline tension levels over time.
The honest picture is that the evidence for non-drug treatments, while promising, remains limited. TTH as a whole is less researched, less well-diagnosed, and less effectively treated than migraine. Many people with TTH never receive adequate treatment, partly because the headaches are seen as “just stress headaches” and partly because the treatment options haven’t advanced as quickly as those for other headache disorders.