Cedar fever can make a driver less safe in two separate ways: the symptoms themselves (sneezing fits, watering eyes, and fatigue) pull attention away from the road, and some of the allergy medicines people take to fight those symptoms can slow reaction time or cause drowsiness. In Central Texas, both risks peak at the same time each winter, when mountain cedar pollen is at its worst and many drivers are self-treating with over-the-counter pills.
At Byrd Davis Alden & Henrichson, LLP, we have represented injured Central Texans since 1959, and our Austin distracted driving accident attorneys regularly see how ordinary winter conditions become part of a crash investigation. This post looks at a question most cedar fever articles skip: when allergy symptoms or allergy medication play a role in a wreck, how does Texas law decide who is responsible?
What Cedar Fever Is and When It Peaks
Cedar fever is not a true fever. It is an allergic reaction to pollen from Ashe juniper, the tree most Texans call mountain cedar. According to the Texas A&M Forest Service, these trees grow densely across the Hill Country and release heavy pollen through the winter months, generally from December through February, with January often the worst stretch.
Symptoms commonly include repeated sneezing, itchy and watery eyes, nasal congestion, headaches, and fatigue. Because the pollen loads can be so heavy, people who rarely deal with seasonal allergies sometimes react too. For drivers on MoPac, I-35, US 183, and the Hill Country highways west of Austin, that means a larger share of people behind the wheel are dealing with symptoms during the same few weeks.
How Allergy Symptoms Affect Driving
Safety researchers group driver distraction into three types: visual (eyes off the road), manual (hands off the wheel), and cognitive (mind off the task of driving). Cedar fever symptoms can trigger all three at once.
Sneezing, Watery Eyes, and Manual Distractions
A sneeze typically forces the eyes closed for a moment, and a sneezing fit can stretch that moment out. At highway speed, even a brief loss of vision covers a meaningful distance. Watery or swollen eyes can blur vision, especially in low winter sun or headlight glare. Reaching for tissues, eye drops, or the climate controls takes a hand off the wheel, and rubbing irritated eyes does both.
Fatigue and Cognitive Distraction
Congestion often disrupts sleep, and a poorly rested driver with a pounding sinus headache is not as quick to notice a braking car or a pedestrian stepping off a curb. This kind of cognitive distraction is harder to spot than phone use, but it can be just as dangerous in stop-and-go Austin traffic.
Allergy Medication and Driving: What the FDA Says
Many people reach for antihistamines during cedar season. The U.S. Food and Drug Administration warns in its consumer guidance, Some Medicines and Driving Don’t Mix, that medicines containing antihistamines may interfere with driving. The FDA explains that antihistamines can slow reaction time and make it harder to focus or think clearly, and that with some medicines the effects can last for several hours or even into the next day.
The FDA’s practical advice is to follow the directions and read the warnings on the Drug Facts label of any nonprescription medicine, and to ask a pharmacist or doctor about alternatives if a medicine makes you drowsy. Not every allergy product carries the same risk, and many people use non-drowsy options without trouble. The point is that “it was just an allergy pill” does not mean a medicine had no effect on the driver.
Can a Driver Be Liable for a Crash Caused by Allergy Symptoms or Medication?
Yes. In a Texas civil case, the core question is negligence: did the driver fail to use the care a reasonably prudent driver would use under the same circumstances? A driver who knows their symptoms are severe, or who knows a medication makes them drowsy, and chooses to drive anyway may be found to have acted unreasonably. Allergies are common, but they do not excuse a failure to keep a proper lookout, control speed, or maintain a safe following distance.
Impairment Is Not Limited to Alcohol
Texas criminal law reflects the same idea. Under Texas Penal Code Section 49.01, “intoxicated” includes not having the normal use of mental or physical faculties because of a drug or other substance, not only alcohol. Whether criminal charges are filed is a separate matter, but evidence that a driver was impaired by a medication can support a civil injury claim.
Evidence That Can Show Symptom or Medication Impairment
In these cases, investigators may look at the police crash report and any officer observations, witness accounts of erratic driving or a driver who appeared drowsy, statements the driver made at the scene, phone and vehicle data, and, where available, medical or pharmacy records obtained through the legal process. An accident reconstruction analysis can also help show whether a delayed reaction contributed to the collision.
Texas Distracted Driving Numbers and Laws
Distraction remains one of the most common factors in Texas crashes. The Texas Department of Transportation reports that in 2024, nearly one in five crashes on Texas roads involved a distracted driver, resulting in 373 deaths and 2,587 serious injuries.
Texas law prohibits reading, writing, or sending electronic messages while driving, and fines for repeat violations can reach $200. Distraction under negligence law is broader than phone use, though. Anything that takes a driver’s attention off the road, including a symptom the driver chose not to manage before getting behind the wheel, can be part of the fault analysis in a car accident claim.
What If You Were Also Dealing With Cedar Fever?
Insurance adjusters sometimes argue that an injured person’s own allergy symptoms contributed to a crash. Texas uses a modified comparative responsibility system under Chapter 33 of the Civil Practice and Remedies Code. If you are found partly responsible, your recovery can be reduced by your percentage of fault, and if you are found more than 50 percent responsible, you cannot recover damages from the other parties. You can read more about how this works in our guide to Texas comparative negligence laws.
That is one reason to be careful about what you say to an insurer after a wreck. A casual comment such as “my allergies were terrible that day” can be used to shift blame, even when the other driver’s conduct was the real cause of the collision.
Practical Steps for Safer Driving During Cedar Season
A few simple habits can lower the risk for you and everyone else on the road during peak pollen weeks:
- Check pollen counts: Watch local forecasts and plan longer drives for lower-count periods when possible.
- Keep pollen out of the car: Drive with windows closed, recirculate cabin air, and replace an old cabin air filter.
- Test new medicines at home first: Take a new allergy medicine when you do not need to drive, read the Drug Facts label, and ask a pharmacist about non-drowsy options.
- Pull over when symptoms spike: If a sneezing fit or eye irritation hits, find a safe place to stop rather than pushing through.
If symptoms or medication leave you feeling foggy, the safest choice is to delay the trip or ask someone else to drive.
Frequently Asked Questions About Cedar Fever and Car Accidents
Is it illegal to drive after taking an antihistamine in Texas?
Taking an antihistamine is not illegal by itself. The legal problem arises if the medicine leaves a driver without the normal use of their mental or physical faculties, which can meet the Texas definition of intoxication, or if it contributes to careless driving that causes a crash. Reading the Drug Facts label and knowing how a medicine affects you before you drive is the safest approach.
Can I sue a driver who caused a crash because of a sneezing fit?
You may be able to. A sudden sneeze is not automatically negligence, but drivers are expected to manage known conditions responsibly, keep a safe following distance, and pull over when symptoms make driving unsafe. Whether a claim is viable depends on the facts, including how the crash happened and what the driver knew about their condition.
Will my own allergy symptoms hurt my injury claim?
They might be raised by the insurer, but they do not automatically defeat a claim. Under Texas proportionate responsibility rules, your compensation can be reduced by your share of fault, and you can still recover as long as you are not more than 50 percent responsible. Avoid speculating about your own symptoms when speaking with an adjuster.
How long do I have to file a car accident lawsuit in Texas?
Most Texas personal injury claims must be filed within two years of the date of the injury under Section 16.003 of the Texas Civil Practice and Remedies Code. Some situations, such as claims against a government entity, involve much shorter notice deadlines, so it helps to speak with a lawyer early.
When is cedar fever season in Central Texas?
Mountain cedar pollen is generally released from December through February, and January is often the peak. Pollen levels can change from day to day with wind and weather, so checking a local pollen forecast before a long drive is a good habit during these months.
Talk With Byrd Davis Alden & Henrichson, LLP About a Cedar Season Crash
Byrd Davis Alden & Henrichson, LLP has represented people injured in Central Texas since 1959. When a crash involves less obvious factors like allergy symptoms or medication, our trial lawyers look past the police report to the evidence that shows what actually happened, including witness accounts, vehicle data, and the driver’s conduct before the collision. When a wreck causes catastrophic injuries or a death, that investigation matters even more.
If you were hurt by a distracted or impaired driver during cedar season or at any other time of year, we can review what happened and explain your options. Contact our Austin office to request a consultation.
