Post-Concussion Syndrome: Symptoms, Diagnosis and Treatment

Overview

Most people recover from a concussion within a few weeks. The CDC notes that most children feel better within 2 to 4 weeks. For some people, though, symptoms stick around much longer. When they last beyond about three months, doctors call it persistent post-concussive symptoms, also known as post-concussion syndrome. Symptoms usually show up within the first 7 to 10 days after the injury and can occasionally last a year or more.

Post-concussion syndrome can follow a fall, a car accident, a sports injury or any violent jolt to the head or body. Surprisingly, the risk does not seem to depend on how severe the original injury was. Women are diagnosed more often, which may partly reflect that they are more likely to seek care. A history of anxiety, earlier headaches or previous brain injuries are known risk factors.

The exact cause is still unclear. Some symptoms may come directly from the injury, while others may reflect conditions the injury sets off, like migraine, sleep problems or dizziness, plus stress and mental health strain. Because standard brain scans usually look normal, people are sometimes told nothing is wrong. The symptoms are real, and targeted care for each one can help.

Symptoms

Headaches, often migraine-like or tension-type
Dizziness and fatigue
Trouble concentrating and remembering
Irritability, anxiety or depression
Sleep problems
Sensitivity to light and noise
Blurry vision
Ringing in the ears
Nausea
Neck pain

Diagnosis

Symptom history: when the injury happened, which symptoms started when, and how they have changed
Neurological exam: checks thinking, memory, senses, strength, coordination and reflexes
Neuropsychological testing: looks at concentration, memory, language and planning skills
Brain imaging (CT or MRI): used to rule out structural damage such as bleeding; it cannot show post-concussion syndrome itself
Specialist evaluations: vision, balance or hearing assessments depending on which symptoms are most prominent

There is no single test for post-concussion syndrome. A neurologist or physiatrist (rehabilitation physician) usually leads the evaluation.

Treatments

Headache management: medicines commonly used for migraine or tension-type headache; overusing pain relievers can itself keep headaches going, so a plan with your doctor matters
Vestibular physical therapy: therapists trained in balance disorders treat dizziness and vertigo
Cognitive support: time, memory aids like notebooks and visual cues, cognitive therapy, and sometimes occupational or speech therapy
Vision care: many vision changes improve on their own; a neuro-optometrist can treat persistent problems
Light and sound sensitivity: gradual exposure work with a physical or occupational therapist
Sleep support: consistent sleep schedules and sleep hygiene, with medication in some cases
Mental health care: psychotherapy, and medication for depression or anxiety when needed
Gradual exercise: a slow, guided return to activity rather than prolonged total rest

Medical Resources

Your Care Plan

A step-by-step guide to navigating your condition, from finding the right doctors to advocating for the care you deserve.

Step 1: Doctors to See

Start with: Your primary care doctor, pediatrician or a sports medicine doctor, especially if symptoms have not improved within a few weeks of the injury.

Then seek: A neurologist or physiatrist with experience in brain injury, who can coordinate care for multiple symptoms.

Build your team:

Vestibular physical therapist: for dizziness and balance problems
Neuro-optometrist or ophthalmologist: for persistent vision symptoms
Psychologist or psychiatrist: for mood, anxiety and sleep
Occupational or speech therapist: for concentration, memory and daily function
ENT specialist: for ear-related symptoms like ringing or hearing changes

Step 2: Advocate for Yourself

A normal CT or MRI does not mean your symptoms are imagined. Imaging is used to rule out other injuries, not to measure post-concussion syndrome. If you are still struggling weeks after an injury, ask for a referral to a specialist experienced in brain injury rather than waiting it out alone. Bring a clear record of your symptoms, and ask for each one to be addressed specifically: dizziness, headaches, vision and mood often need different kinds of care. If you are a student, ask your care team for written guidance on school accommodations such as rest breaks, reduced screen time or adjusted workloads.

Step 3: Your Action Plan

Write down the date and details of your injury and every symptom you have noticed since, including when each started.
Track headaches, dizziness, sleep, mood and concentration daily, noting what makes them better or worse.
Keep a record of any pain medicine you take and how often, since frequent use can contribute to ongoing headaches.
If symptoms last more than a few weeks, ask your doctor for a referral to a neurologist or physiatrist with brain injury experience.
Ask whether vestibular therapy, vision assessment or neuropsychological testing fits your symptoms.
Work with your care team on a gradual, structured return to school, work and physical activity.
Include mental health support in your plan, since mood and sleep are part of recovery, not separate from it.

Important: This report is educational information, not medical advice. Always consult a qualified healthcare professional for diagnosis and treatment decisions.