Headaches in people with dementia are common but tricky to manage, partly because the person may not be able to describe their pain clearly, and partly because many standard headache medications carry serious risks for older adults with cognitive impairment. Treatment relies on a combination of safe pain relief, environmental adjustments, and consistent daily routines that prevent headaches from developing in the first place.
Why Dementia and Headaches Often Overlap
The brain regions that process pain share significant overlap with the networks responsible for memory. The thalamus, the hippocampus, and parts of the temporal cortex all play roles in both systems. This means the same disease processes damaging memory circuits can also alter how the brain handles pain signals, sometimes amplifying them, sometimes making them harder for the person to interpret or communicate.
Headaches in dementia can stem from several sources. Dehydration is one of the most common and most preventable. People with dementia often forget to drink, lose their sense of thirst, or struggle with the physical act of picking up a glass. The Alzheimer’s Society notes that dehydration causes headaches, increased confusion, constipation, and urinary tract infections. Vascular dementia, which results from reduced blood flow to the brain, carries its own headache risks tied to the underlying blood vessel damage. Migraine history is an independent risk factor for both Alzheimer’s disease and vascular dementia, so many people entering a dementia diagnosis already have a long relationship with headaches.
Dementia medications themselves can also be the culprit. Cholinesterase inhibitors, the most commonly prescribed class of drugs for Alzheimer’s, cause headaches in roughly 8 to 13 percent of patients in clinical trials. In real-world practice, the rate of headaches clearly linked to the medication appears lower, closer to 1.4 percent, but it’s worth considering whenever headaches develop shortly after starting or adjusting a dementia medication.
Recognizing Headache Pain in Someone Who Can’t Tell You
As dementia progresses, a person may lose the ability to say “my head hurts.” Caregivers need to read behavioral cues instead. The Hartford Institute for Geriatric Nursing identifies five categories of observable signs that suggest pain:
- Breathing changes: Noisy or labored breathing, sudden hyperventilation, or irregular breathing patterns.
- Vocalizations: Moaning, groaning, repeated calling out, crying, or low muttering with a negative tone.
- Facial expressions: A sad or frightened look, furrowed brow, grimacing, or eyes squeezed shut.
- Body language: Tense or rigid posture, fidgeting, clenched fists, pacing, pulling away from touch, or striking out.
- Inability to be consoled: If words, touch, or distraction fail to calm the person, pain is a likely cause.
Head-specific cues can include repeatedly touching or rubbing the forehead or temples, turning away from light, or flinching at sounds. These behaviors sometimes get misidentified as “agitation” or “sundowning” when the real problem is untreated pain.
A Step-by-Step Approach to Treatment
Researchers at the University of North Carolina developed a serial trial intervention specifically for managing pain in dementia. It gives caregivers a clear sequence to follow when behavior suggests discomfort:
Step 1: Look for an obvious source of discomfort. Check for a full bladder, constipation, an uncomfortable position, clothing that’s too tight, a room that’s too hot or cold. Many headache-like symptoms resolve once a basic physical need is met.
Step 2: Try non-drug comfort measures. Dim the lights, reduce noise, offer a cool cloth on the forehead, guide the person to a quiet room, or gently massage the temples and neck. These interventions carry zero risk and often provide meaningful relief, especially for tension-type headaches.
Step 3: If the behavior persists, give a simple analgesic. Acetaminophen is the go-to first choice. It is well tolerated in older adults and does not carry the bleeding risks of anti-inflammatory drugs. Standard adult dosing applies, but total daily intake needs to stay within safe limits, especially if the person has liver disease or drinks alcohol.
Step 4: If pain continues, involve a healthcare provider. A nurse practitioner, physician, or palliative care specialist can evaluate whether the headache points to something more serious or whether a different pain management approach is needed.
Medications to Use and Avoid
The 2023 American Geriatrics Society Beers Criteria, the standard reference for medication safety in older adults, flags several common headache medications as potentially harmful for people with dementia.
Anti-inflammatory drugs like ibuprofen and naproxen increase the risk of stomach bleeding and kidney injury in adults over 75. They can be used short-term when acetaminophen fails, but chronic daily use should be avoided unless a doctor has weighed the risks and added stomach protection. Indomethacin and ketorolac are singled out as the most dangerous in this class and should be avoided entirely.
Medications with anticholinergic effects are specifically contraindicated in dementia because they worsen cognitive symptoms. This rules out many older antihistamines and some sleep aids that people might otherwise reach for when a headache comes with nausea or trouble sleeping. Muscle relaxants fall into the same category: they cause sedation, increase fall risk, and have questionable effectiveness in older adults.
For people who get frequent tension-type headaches, low-dose tricyclic antidepressants are considered the best preventive option in older adults, according to Mayo Clinic Proceedings guidance on headache management in this age group. These require a prescription and careful monitoring but can reduce headache frequency significantly when daily or near-daily headaches are the pattern.
Preventing Headaches With Environmental Changes
Many headaches in dementia are preventable through consistent environmental management. Lighting is one of the biggest controllable triggers. Flickering lights, harsh overhead fluorescents, and glare from windows or screens can all provoke headaches, particularly in people with a migraine history. Use soft, steady lighting. Polarized lenses or anti-glare screens help if the person spends time near windows or watches television. Loud or sudden noises are another well-documented trigger, so keeping the home environment relatively calm and predictable matters.
Temperature extremes, strong odors (cleaning products, perfumes, cooking fumes), and overstimulating social situations can also contribute. The goal is a stable, comfortable sensory environment. This doesn’t mean the person should sit in a dark, silent room, but it does mean paying attention to what consistently precedes a headache episode and adjusting accordingly.
Keeping Hydration on Track
Dehydration is one of the most underrecognized headache triggers in dementia care. The recommended daily fluid intake is six to eight cups or glasses spread throughout the day. For someone with dementia, this rarely happens without help.
Practical strategies include offering drinks at set times rather than waiting for the person to ask, using clear or brightly colored cups that are easy to see and grip, serving foods with high water content like watermelon, cucumber, soup, and gelatin, and keeping a filled cup within reach during waking hours. Some caregivers find it helpful to track intake with a simple checklist. If the person resists drinking water, flavored options, herbal tea, or diluted juice all count toward the daily target.
Signs of dehydration to watch for include dark urine, dry mouth, increased confusion beyond the person’s baseline, and of course headaches that come on in the afternoon or evening after a day of poor fluid intake.
Tracking Patterns to Guide Treatment
Keeping a simple log of when headache behaviors occur, what was happening beforehand, what was tried, and what helped can reveal patterns that make prevention easier over time. Note the time of day, recent food and fluid intake, sleep quality the night before, any medication changes, and environmental conditions. After two or three weeks, trends often become clear: headaches that cluster in the late afternoon might point to dehydration or fatigue, while morning headaches could relate to poor sleep positioning or medication timing.
This log is also invaluable when consulting a healthcare provider. It transforms a vague report of “they seem to have headaches a lot” into specific, actionable information that helps guide treatment decisions.