Persistent symptoms · 9 min read
Post-Concussion Syndrome: Symptoms, Treatment & Recovery
Post-concussion syndrome (PCS) — increasingly called persisting post-concussive symptoms — means concussion symptoms that last beyond the expected recovery window: roughly four weeks for children and teens, and about two to four weeks for adults. If you're weeks or months out from a head injury and still not yourself, you are not imagining it, and you are not alone: it affects up to a third of people after concussion.
What post-concussion syndrome feels like
PCS is a cluster, not a single symptom. Common threads include persistent headaches or migraine, brain fog and slowed thinking, dizziness or motion sensitivity, visual strain (trouble with screens, reading, busy environments), fatigue that hits like a wall, sleep disruption, irritability, anxiety, and low mood. Symptoms often fluctuate — good days followed by crashes after overexertion.
Why symptoms persist
Modern concussion medicine treats PCS as several overlapping, treatable problems rather than one mysterious brain injury: an under-conditioned autonomic system (exertion intolerance), a vestibular system that never recalibrated (dizziness), an overworked visual system (screen intolerance, eye strain), neck injury from the same impact (headaches), and an understandably stressed nervous system (sleep and mood changes). Each has a targeted therapy — which is why "just wait it out" is outdated advice.
Post-concussion syndrome treatment: what actually helps
- Graded aerobic exercise therapy — structured sub-symptom-threshold exercise, often guided by an exertion test; one of the best-evidenced PCS treatments.
- Vestibular rehabilitation — retrains the balance system; first-line for dizziness and motion sensitivity.
- Vision therapy / neuro-optometry — for convergence insufficiency and visual strain, which are extremely common and very fixable.
- Targeted headache management — distinguishing migraine-type, neck-driven, and rebound headaches changes the treatment entirely.
- Cognitive rehabilitation and neuropsychology — strategies for memory and attention, plus objective testing that guides work/school accommodations.
- Sleep and mood care — treating insomnia and anxiety isn't optional; both directly amplify every other symptom.
What can a neurologist do for post-concussion syndrome?
A neurologist can rule out other causes, order imaging when red flags exist, prescribe preventive headache or migraine medication, and coordinate the therapy team above. For dizziness-dominant or visually-dominant PCS, the neurologist often works alongside vestibular therapists and neuro-optometrists — which is why multidisciplinary concussion clinics tend to get the best results for stubborn cases.
How long does post-concussion syndrome last?
With active, targeted treatment, most people improve substantially within three to six months. Untreated, symptoms can grind on for a year or more — and a small group experience symptoms years later, usually when the underlying vestibular, visual, or exertional problems were never addressed. The encouraging flip side: even people with post-concussion syndrome years later frequently respond to the same targeted therapies. It is rarely too late to be evaluated.
Living with PCS — and getting out of it
Pace activity rather than boom-and-bust, protect sleep fiercely, keep gentle daily aerobic activity, and get a proper multidisciplinary evaluation rather than cycling through single-symptom fixes. If your current care is "rest and check back in a month," that's a sign to look for a dedicated concussion program.
Find a concussion specialist near you
Search 3,214 verified concussion clinics and specialists across all 50 states — filter by services like vestibular therapy, vision therapy, and neuropsychology.
Frequently asked questions
What is post-concussion syndrome?
Post-concussion syndrome (persisting post-concussive symptoms) is when concussion symptoms — headaches, brain fog, dizziness, visual strain, fatigue, sleep and mood changes — last beyond the expected recovery window of roughly two to four weeks. It affects up to one in three people after a concussion.
How long does post-concussion syndrome last?
With targeted treatment, most people improve substantially within three to six months. Without treatment it can persist a year or more. Even long-standing symptoms often respond to vestibular therapy, vision therapy, graded exercise, and headache management.
What can a neurologist do for post-concussion syndrome?
A neurologist can rule out other conditions, manage post-traumatic headache and migraine with preventive medication, order appropriate imaging, and coordinate vestibular, vision, and exertion therapies — often within a multidisciplinary concussion clinic.
Can post-concussion syndrome start or persist years later?
Symptoms that persist years after a concussion usually reflect untreated vestibular, visual, exertional, or headache problems from the original injury. These remain treatable — a multidisciplinary concussion evaluation is worthwhile at any time point.
Educational content only — not a substitute for professional medical advice, diagnosis, or treatment. Reviewed by Jon MacKay, PharmD, BCACP against current clinical guidance; last updated July 2026.