Post-Traumatic Headache

Overview

A post-traumatic headache is a headache that begins after an injury to the head or neck, such as a concussion, a blow to the head, or whiplash. It is one of the most common symptoms after a head injury and is considered a secondary headache, meaning it is caused by the injury rather than being a headache disorder on its own.

Post-traumatic headaches often feel like a tension-type headache or a migraine, and some people experience features of both. Most are classified as acute and resolve within a few weeks to a few months as the injury heals. In some people, however, the headaches persist for longer and become a chronic problem. While most post-traumatic headaches are not dangerous, certain warning signs after a head injury require urgent evaluation to make sure there is no serious bleeding or brain injury.

Symptoms

The headache typically starts within seven days of the injury or of regaining consciousness. Its features vary and may resemble different headache types:

• A dull, aching, pressing pain, often felt around the whole head like a tight band (tension-type)
• A throbbing or pulsing pain, sometimes on one side, with nausea and sensitivity to light or sound (migraine-type)
• Neck pain and stiffness
• Dizziness, lightheadedness, or balance problems
• Difficulty concentrating, memory problems, and irritability
• Fatigue and trouble sleeping

Warning signs after a head injury that require emergency care include a severe or rapidly worsening headache, repeated vomiting, seizures, increasing drowsiness or confusion, weakness, slurred speech, vision changes, or clear fluid or blood from the nose or ears.

Causes

Post-traumatic headache develops after an injury affecting the head or neck. Common settings include:

• Concussion and mild head injury: The most common cause, often from sports, falls, or accidents.
• Whiplash and neck injury: Sudden movement of the head and neck, such as in a car crash.
• More severe head trauma: Although headaches can follow injuries of any severity.

The exact mechanisms are not fully understood but are thought to involve irritation or strain of the nerves, muscles, and blood vessels of the head and neck, along with changes in how the brain processes pain after injury. Interestingly, the severity of the headache does not always match the severity of the injury.

Risk Factors

• A previous history of migraine or frequent headaches
• Prior head injuries or concussions
• Female sex
• Neck injury or strain at the time of the trauma
• Stress, anxiety, or depression, which can prolong symptoms
• Participation in contact sports or activities with a higher injury risk

Diagnosis

Diagnosis is based mainly on the history of a head or neck injury followed by a new headache. Evaluation may include:

• Medical history and examination: Reviewing the injury, the timing and nature of the headache, and a neurological exam
• Brain imaging: CT or MRI scans, used especially soon after the injury or when warning signs are present, to rule out bleeding or structural injury
• Symptom tracking: Keeping a headache diary to monitor pattern, triggers, and response to treatment

Imaging is often normal in post-traumatic headache; its main role is to exclude serious causes.

Treatment

Treatment is tailored to the headache type and severity, and most acute post-traumatic headaches improve with time and supportive care.

• Rest and gradual return to activity: A balanced recovery with adequate rest early on, then a step-by-step return to normal activity.
• Medications: Pain relievers for occasional use, with care to avoid overuse, and migraine-specific or preventive medicines when the headaches resemble migraine or become frequent.
• Physical therapy: Especially helpful when neck strain contributes.
• Lifestyle measures: Good sleep, hydration, stress management, and limiting screen time during recovery.
• Addressing related symptoms: Treating sleep problems, mood changes, and dizziness that often accompany the headache.

Overusing pain medicine can itself worsen headaches, so follow medical advice on how often to take it. Persistent or chronic post-traumatic headaches may benefit from care by a headache or neurology specialist.

Prevention

• Wear appropriate helmets for sports, cycling, and similar activities
• Use seatbelts and proper head restraints in vehicles
• Reduce fall risks at home, especially for older adults and young children
• Allow full recovery from a concussion before returning to sport to reduce repeat injury
• Follow return-to-play and return-to-activity guidance after any head injury

When to See a Doctor

See a doctor for any headache that develops after a head or neck injury, especially if it persists, worsens, or interferes with daily life. Seek emergency care immediately after a head injury if there is a severe or worsening headache, repeated vomiting, seizures, increasing confusion or drowsiness, weakness or numbness, slurred speech, vision changes, unequal pupils, or clear fluid or blood draining from the nose or ears, as these can signal serious bleeding or brain injury.

Related Topics

Frequently Asked Questions

References

1. American Migraine Foundation. Post-Traumatic Headache.
2. Cleveland Clinic. Post-Traumatic Headaches.
3. National Institute of Neurological Disorders and Stroke (NINDS). Traumatic Brain Injury.
4. MedlinePlus, U.S. National Library of Medicine. Headache.