Traumatic brain injury, or TBI, is medicine's catch-all term for any injury to the brain caused by external force. It ranges from the mildest concussion to catastrophic crush injuries. The middle of that range — what doctors call "mild" or "moderate" TBI, including many concussions — is where maritime work goes wrong the most. The injury is real, the symptoms are life-altering, and the initial medical evaluation almost always misses it.
In maritime settings, TBI happens three ways: a blow to the head, a fall with impact, or a violent shake or acceleration-deceleration event (a "coup-contrecoup" injury — the brain slams against the inside of the skull from the motion alone, without needing to strike anything directly). All three are common on working vessels.
Why TBI gets missed at the time.
The rig medic's job is to stabilize and transport. Most of them are trained in trauma basics, not neurology. When a deckhand takes a hit to the head and says "I'm fine, I just need a minute," the medic documents "no loss of consciousness, alert and oriented," and the crew member gets a bottle of water and goes back to work.
Hours later, the symptoms start. Headache, difficulty concentrating, balance problems, nausea, irritability, sleep disruption, sensitivity to light. The injured worker often attributes them to fatigue or stress. The company, if they hear about them at all, is happy to do the same. No imaging is ordered, no neurologist is consulted, and the paper trail of the case never mentions a head injury.
What TBI actually looks like.
The symptom profile is the tell. Most post-concussive syndromes produce some combination of:
Cognitive. Difficulty concentrating, slowed thinking, memory problems, word-finding difficulty, "brain fog." Often first noticed by family members before the injured worker notices.
Physical. Persistent headache, dizziness, balance problems, nausea, blurred vision, sensitivity to light and noise.
Emotional. Irritability, depression, anxiety, personality changes. Often the most disabling category for the injured worker and their family.
Sleep. Insomnia, disrupted sleep, fatigue. Frequently overlooked as a TBI symptom.
A qualified neurologist or neuropsychologist can tie these together and order the right testing: neuropsychological evaluation, MRI with specific TBI protocols, DTI imaging in some cases. These are the workups that produce objective evidence of brain injury and transform a skeptical adjuster's "subjective complaints" argument into a documented medical reality.
What TBI cases are worth.
TBI produces some of the highest settlements and verdicts in maritime law, particularly when the injury affects a worker's ability to return to safety-sensitive offshore work. The reasons:
The career implications of a TBI diagnosis are severe. Offshore employers will not return a worker with a documented TBI to safety-sensitive duty — the medical review boards that clear workers for return to offshore work take TBI seriously. A 35-year-old driller making $200,000 a year who can never return offshore has a future-earnings loss of $4M-$6M, before pain and suffering.
The pain-and-suffering component for TBI is substantial because the injury affects the worker's entire quality of life — memory, relationships, mood, sense of self. Jurors who understand this award accordingly.
Typical TBI case ranges:
Mild TBI with full recovery: $200,000-$600,000.
Mild-to-moderate TBI with persistent cognitive symptoms: $750,000-$2M.
Moderate-to-severe TBI, career-ending: $2M-$8M.
Severe TBI requiring lifetime care: $5M-$20M+.
What to do if you hit your head.
Document the mechanism of injury. "I hit my head on the catwalk when the pipe swung." "I fell from the tank top and my helmet struck the deck." "I was standing near the connection when the hose let go and the water hit me in the face." All of these are events that can produce TBI, and all of them need to be in writing.
Get evaluated by a neurologist, not an occupational doctor. A company occupational doctor will clear you for work. A neurologist will actually evaluate you. If the company won't authorize a neurology referral, go to one yourself and send them the bill — they're required to pay for reasonable cure.
Document the symptoms in real time. Keep a daily log of headaches, cognitive problems, sleep issues, mood changes. Ask your spouse or close family to write down what they're noticing. These journals are powerful evidence months later.
Don't let anyone tell you you're "fine" because the CT scan was clean. A normal CT scan rules out bleeding. It does not rule out TBI. Most TBI is invisible on standard imaging. You need specialized testing to prove what's really happening in your brain.