Overview
Light activity helps more than total rest after the first day or two.
Symptoms
Common signs:
- Headaches or fogginess after a head injury
- Headaches, fog, or dizziness weeks after a concussion
Less common
- Dizziness
- Irritability
Look up a symptom: Brain fog or trouble concentrating · Dizziness · Headache · Headaches, fog, or dizziness weeks after a concussion
When to get medical care
Call 911Worsening headache, repeated vomiting, confusion, or one pupil larger.
Get care todayNew weakness or seizure.
See a doctor soonSymptoms lasting weeks.
Causes
Brain injury.
Who is more likely to get it
- Past concussions
Possible complications
Diagnosis
A clinician reviews symptoms.
The exam
Nerve exam.
Treatment
Ease back in.
Self-care
- Increase activity slowly
- Sleep well
- Limit screens if they worsen symptoms
Medicines
Medicines that may help:
| Medicine | Helps with | Good to know |
|---|---|---|
| Pain relievers | Pain and swelling | Ask first if you have kidney, stomach, or heart problems. |
OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.
Vestibular therapy, vision therapy.
Prevention
- Helmets
Which doctor treats this
- Urgent care or the ER can treat it first. For minor problems, your primary care provider can help.
- They may send you to a neurologist (brain and nerve doctor).
Living with it
Support groups and helplines
- Brain Injury Association of America: Help line 1-800-444-6443 and state chapters.
Back to school, work, or sports
- Never return to sports the same day as a head injury.
- Go back to school first, with breaks and a lighter workload if needed.
- Return to sports step by step only after a doctor clears you and symptoms are gone.
Outlook
Most recover.
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Search ClinicalTrials.gov for studies on Post-concussion syndrome
Sources
Last updated 2026-11-12.