Understanding How Medical Conditions Can Lead to a False DWI Arrest
- Blair Goss

- May 28
- 5 min read
Driving while intoxicated, or DWI, charges are very serious. Sometimes referred to as DUI charges, these can carry consequences that can affect almost every part of your life. However, not every DUI arrest is actually from impairment due to alcohol or drugs. In some cases, a person's medical condition can mimic DUI symptoms and lead to a false DUI arrest.
For people in Sacramento and throughout California, understanding how medical conditions can lead to a false DWI arrest is important.

The Overlap Between Medical Symptoms and Intoxication
Police officers are trained to look for specific things that may indicate impairment during a traffic stop. These symptoms of intoxication might be:
Slurred speech
Poor coordination
Confusion
Red or glassy eyes
Erratic driving behavior
Though these might indicate intoxication, they might also indicate certain medical conditions.
Common Medical Conditions That Mimic DUI Symptoms and Lead to a False DUI Arrest
There are several health issues that resemble intoxication. These include:
Diabetes and Hypoglycemia
One of the most common medical issues that mimic DUI evidence is diabetes. It's even more likely to mimic a DWI when sugar levels drop too low, which is called hypoglycemia, and if you have diabetic ketoacidosis, it can be even worse. Low blood sugar can even show a false positive on a breathalyzer reading. Symptoms of low blood sugar might include:
Confusion or disorientation
Slurred speech
Sweating and shakiness
Poor coordination
Dizziness
To a law enforcement officer, these might look like impairment and they may start the process to arrest a person for DWI.
Neurological Disorders
There are several neurological disorders that can lead to a DWI arrest, too. These include:
Epilepsy
Parkinson's disease
All of these can impair motor skills and cognitive function. A person who has these conditions might struggle with balance issues, speech, or coordination issues, all of which may indicate impairment during field sobriety tests.
Inner Ear Disorders
Balance is a major sign that a person is intoxicated, but it also is a symptom of inner ear disorders like vertigo or Ménière’s disease. Someone with these conditions may:
Stumble or sway while walking
Have difficulty standing still
Experience dizziness or nausea
These symptoms may make a person appear intoxicated when, in fact, they haven't had anything at all.
Fatigue and Sleep Disorders
Extreme fatigue and sleep-related conditions, like sleep apnea, can also impair a person's driving ability and coordination. A driver who is sleep-deprived can:
Drift between lanes
Have delayed reaction times
Appear confused or slow to respond
Police officers might see this as signs of intoxication, especially if it's later at night.
Gastroesophageal Reflux Disease (GERD)
Gastroesophageal Reflux Disease, or GERD, may also affect breathalyzer readings. In some cases, acid reflux can cause alcohol that is in the stomach to rise into the esophagus. This can lead to a higher BAC reading. This is a big problem because many arrests for DWI are based on breathalyzer results.
Medication Side Effects
Side effects from medications can also cause someone to act like they may be intoxicated. Common symptoms of over-the-counter meds include:
Drowsiness
Dizziness
Blurred vision
Slowed reaction time
Even when these items are taken correctly, certain medications can affect a person's ability to perform field sobriety tests or respond clearly when speaking with police officers.
The Limitations of Field Sobriety Tests in DUI Cases
Field sobriety tests are common, and they are often used to "prove" impairment, but they aren't foolproof. These tests focus on things like physical coordination and the person's ability to follow instructions. Both, however, can be affected by medical conditions.
Standard field sobriety tests like one-leg stand or walk-and-turn may show intoxication, but they also might show a medical condition that looks like intoxication.
In addition, it's also important to consider environmental factors like uneven pavement, poor lighting, or inclement weather, which can impact performance.
Breathalyzer Results and Chemical Testing Concerns
Breathalyzer tests are also commonly used in DWI stops. However, there are medical conditions like GERD and diabetes that can produce acetone into the breath, and this can be interpreted as alcohol on testing devices.
Blood tests are typically more accurate, but even these have issues like contamination or improper handling.
Building a Defense Against a False DUI Charges
When a medical condition plays a role in a DWI arrest, it can form the foundation of a strong legal defense. A thorough investigation is essential to uncover the truth and challenge the prosecution’s case.
Medical Documentation
Medical records can provide critical evidence of a diagnosed condition and its associated symptoms. Documentation from healthcare providers can help establish that the individual’s behavior was consistent with a medical issue rather than intoxication.
Expert Testimony
Medical experts may be called upon to explain how a specific condition affects behavior, coordination, or chemical test results. Their testimony can help clarify complex medical issues for the court.
Challenging Test Results
An experienced defense attorney can scrutinize the administration and accuracy of field sobriety tests and chemical tests. They can also answer questions like Is not speaking English a defense for a DWI in CA? This may include examining whether proper procedures were followed and whether external factors could have influenced the results.
Officer Observations
Cross-examining the arresting officer can reveal inconsistencies or gaps in their observations. If the officer failed to consider alternative explanations for the driver’s behavior, this can weaken the prosecution’s case.

Why Legal Representation Matters
False DWI arrests involving medical conditions require a nuanced and strategic approach. These cases often involve both legal and medical complexities, making experienced legal representation essential.
A knowledgeable defense attorney can:
Identify relevant medical factors
Gather supporting evidence
Challenge unreliable test results
Advocate effectively in court
Without proper representation, individuals may struggle to present their case clearly and persuasively. For more information, a great criminal defense lawyer in Sacramento CA may be able to help.
Protecting Yourself Moving Forward
While it is not always possible to prevent a false DWI arrest, individuals with known medical conditions can take steps to reduce risk:
Carry medical identification or documentation
Inform officers of any relevant conditions during a stop
Follow prescribed treatment plans
Avoid driving when experiencing severe symptoms
These precautions may not eliminate the possibility of an arrest, but they can provide important context that may be useful later in a legal defense.
Medical conditions can create a dangerous overlap with the signs of intoxication, leading to false DWI arrests that carry serious consequences. From diabetes and neurological disorders to medication side effects and testing inaccuracies, there are many factors that can complicate a seemingly straightforward case.
For individuals facing DWI charges in Sacramento, understanding these issues is the first step toward building a strong defense. By examining the role of medical conditions and challenging flawed assumptions, it is possible to uncover the truth and protect one’s rights in the face of a wrongful accusation.
Goss Law offers free consultations for those who need a DUI defense. One defense strategy is to use medical evidence and a person's medical history to show that medical conditions, over-the-counter drugs, or prescription medications led to a person being wrongfully arrested.

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