Head Injury After an Accident: Warning Signs You Should Never Ignore

It's a scene that repeats often: there was a crash, they checked you at the scene, you felt 'just shaken up,' and you went home. Two days later a headache starts that won't go away, you can't concentrate at work, and your wife tells you you've been acting strange and short-tempered. That's not a coincidence, and it's not in your head — well, it is, but literally.

This article is general information so you know what to watch for. It does not replace a doctor's diagnosis: if you suspect anything, see a health professional.

Symptoms can take days to appear

According to the CDC, concussion or mild brain injury symptoms may not appear until hours or days after the blow. That's why so many people sign that they're 'fine' at the accident scene and weeks later are fighting with the insurer to be believed.

You don't need to hit your head to injure your brain

This is the point that surprises people most: your head doesn't have to strike anything, and you don't have to lose consciousness. In an impact, your head whips violently forward and back, and the brain moves inside the skull. That movement alone can cause the injury. If someone told you 'you didn't hit your head, you're fine,' that logic isn't correct.

Warning signs to watch for in the following days

These signs deserve a medical evaluation. Ask your family to watch for them too — often they notice the changes before you do:

• Headache that won't go away or keeps getting worse.
• Dizziness or balance problems.
• Confusion or a 'mental fog,' like you're thinking more slowly.
• Memory or concentration problems — forgetting things, losing your train of thought.
• Blurred or double vision.
• Sensitivity to light or noise you didn't have before.
• Nausea or vomiting.
• Sleep changes: insomnia, or sleeping much more than usual.
• Mood changes or irritability — being short-tempered for no clear reason.

What if the symptoms don't go away?

Most people recover from a concussion. But a significant share —roughly 15% to 20%— still have symptoms months or even years later. That's called post-concussion syndrome, and it can affect your ability to work, drive, study, and even your temperament with your family. It's not 'exaggerating': it's a recognized medical condition.

Why this matters for your case too

Here's the legal part, and it's important you understand it: if you don't see a doctor and it isn't documented, to the insurer it's as if it never happened. They'll argue one of two things: that it 'wasn't that bad' because you didn't seek care, or that your injury came from somewhere else, not the accident.

Brain injuries are among the hardest to prove precisely because you can't see them — there's no cast, no scar. What proves them is your medical record: the date symptoms started, the evaluations, the follow-ups. The earlier that record starts, the stronger your case.

What to do if you suspect a brain injury

1. 1See a doctor as soon as possible, even if the accident was days ago.
2. 2Tell the doctor it was from an accident and on what date — get it written in the record.
3. 3Write down your symptoms day by day: what you felt, at what time, what you couldn't do.
4. 4Ask your family to write down what they notice in your mood, memory, or behavior.
5. 5Complete all treatment and follow-up appointments. Gaps get used against you.
6. 6Don't give a recorded statement to the insurer saying you're 'fine' before you know what's going on.

How long do I have to file in Texas?

In Texas, most personal injury claims must be filed within 2 years of the date the claim arose (Section 16.003 of the Civil Practice and Remedies Code). It sounds like a lot of time, but with a brain injury the treatment and documentation take months — and the accident evidence is lost sooner. Waiting isn't in your favor.

How a lawyer helps

A lawyer experienced with brain injuries knows these cases are won with documentation: they connect you with the right doctors, order the accident evidence preserved, build the record of how the injury changed your daily life, and don't let the insurer minimize something you can't see at a glance. With more than 30 years of experience in Texas courts, Ruiz & Associates reviews your case at no cost. We're bilingual, we answer personally, and we serve Eagle Pass, Maverick County, San Antonio, and all of Texas. We work on contingency: you pay nothing unless we win your case.