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Why do I feel drunk at night?

Author

Daniel Moore

Published Jan 11, 2026

The potential causes of sleep drunkenness may be related to other factors that affect your sleep. These can include sleep disorders, such as sleep apnea, as well as general sleep deprivation. Restless leg syndrome may be another cause of sleep drunkenness because it can affect your quality of sleep at night.

What causes a drunk feeling without drinking?

Auto brewery syndrome is also known as gut fermentation syndrome and endogenous ethanol fermentation. It's sometimes called “drunkenness disease.” This rare condition makes you intoxicated — drunk — without drinking alcohol. This happens when your body turns sugary and starchy foods (carbohydrates) into alcohol.

What causes the drunk feeling?

The initial euphoric effects of alcohol are a result of dopamine being released from the reward center in the brain. Dopamine is known as the “feel good” neurotransmitter and it is involved in feeling pleasure. Dopamine release is also thought to be one of the mechanisms that drive addiction.

Can lack of sleep make you feel drunk?

Studies have shown that going too long without sleep can impair your ability to drive the same way as drinking too much alcohol. Being awake for at least 18 hours is the same as someone having a blood content (BAC) of 0.05%. Being awake for at least 24 hours is equal to having a blood alcohol content of 0.10%.

Why does my head feel like I'm drunk?

Doctors use the term vertigo (see below) to describe this spinning, revolving form of dizziness. Other people describe the feeling as if they were walking on a mattress or walking on a soft surface like cotton wool. Some people describe it as similar to being tipsy or drunk.

44 related questions found

Can anxiety cause you to feel drunk?

Physical symptoms of anxiety - "drunkenness" feeling.

Why do I feel drunk and tired?

Sleeping badly does similar things to your brain as drinking alcohol, according to a new study. Like with drinking, exhausted neurons respond more slowly, take longer and send weaker signals, according to the new research. The study could explain why being very tired feels a little like being drunk.

What can mimic being drunk?

Medical Conditions that Mimic Intoxication

  • diabetes;
  • hypoglycemia;
  • epilepsy;
  • stroke;
  • hypoxia from emphysema;
  • hyper- or hypothermia;
  • brain injuries;
  • reactions to medications;

Why do I feel hungover if I don't get enough sleep?

Why the insomnia hangover? The day after a sleepless night, people often experience heart palpitations, nausea, dizziness or light-headedness. "It's because your Cortisol levels are disrupted when you don't sleep properly," says Dr Moyra Stein, Cape Town general practitioner.

Does tiredness make you more drunk?

You're Short on Sleep. When you're exhausted, your mental processes slow down, causing you to think and act a little more sluggish than normal. And if you start drinking alcohol (a sedative) while you're tired, you'll feel drunker than you really are, says Swartzwelder.

How do I know if I have brain damage from alcohol?

Short-term symptoms indicating reduced brain function include difficulty walking, blurred vision, slowed reaction time, and compromised memory. Heavy drinking and binge drinking can result in permanent damage to the brain and nervous system.

What is a depressant alcohol?

Alcohol is a depressant. That means any amount you drink can make you more likely to get the blues. Drinking a lot can harm your brain and lead to depression. When you drink too much, you're more likely to make bad decisions or act on impulse.

Why do I get drunk so fast?

Genetic factors

Age, gender, race, and other parts of your genes can determine how drunk you may get. For example: women tend to feel symptoms more quickly than men, and those over 25 are more likely to get a hangover than someone younger than them.

Why do I feel hungover but had no alcohol?

A phantom hangover is a term for the symptoms that your body creates after abstaining from alcohol for a certain amount of time. These symptoms often starts after 48 hours, despite not having had any alcohol during this time.

What is it called when your body produces alcohol?

Introduction. Auto-brewery syndrome or gut fermentation syndrome is a condition in which ethanol is produced through endogenous fermentation by fungi or bacteria in the gastrointestinal system, oral cavity, or urinary system.

Can you suddenly develop an alcohol intolerance?

Alcohol intolerance is a real condition that may occur suddenly or later in life. Here's why your body may start to reject drinking alcohol. If you have a pattern of suddenly feeling very sick after consuming alcohol, you may have developed sudden onset alcohol intolerance.

Does diabetes feel like a hangover?

You can end up with a “sugar hangover”, which can be nastier than a traditional hangover. It can make you feel awful, quite frankly, and can include a headache, fatigue, foggy thinking and thirst. This is because you've had enough sugar to cause hyperglycemia, when your blood sugar levels rocket.

Why do I wake up feeling groggy?

Waking up feeling slightly groggy or tired is just part of the human experience. It's called sleep inertia: "The transitional state between sleep and wake, marked by impaired performance … and a desire to return to sleep." The main thing to know about sleep inertia is it is completely normal.

What is a permanent hangover?

For more steady drinkers, there is something called the permanent hangover phenomenon with symptoms that mirror fatigue, irritability, poor concentration, and low mood. Often this is put down to life stressors such as work, the kids or not eating well but is more likely due to the effects of alcohol on the system.

Can diabetes make you seem drunk?

Even if you do not consume alcohol, there are health conditions that can mimic intoxication symptoms. Untreated diabetes, for example, can make you appear drunk when you are not.

Can low blood pressure make you seem drunk?

A person going into a "low" can appear to be drunk. They can sweat, talk confused, become disoriented, stumble, lose their bearings, become aggressive, even "feisty," sometimes obscene, or pass out... But they're NOT drunk— and it is no fun they're having.

Can diabetes make you act drunk?

There are a few medical conditions that have the potential to make you appear intoxicated. Among them is diabetes, a common condition throughout America. As a side effect of this condition, people with diabetes may appear intoxicated and slur their speech, get confused or have trouble walking.

What is the 3 3 3 rule for anxiety?

Follow the 3-3-3 rule.

Look around you and name three things you see. Then, name three sounds you hear. Finally, move three parts of your body — your ankle, fingers, or arm.

What are 5 symptoms of anxiety?

Common anxiety signs and symptoms include:

  • Feeling nervous, restless or tense.
  • Having a sense of impending danger, panic or doom.
  • Having an increased heart rate.
  • Breathing rapidly (hyperventilation)
  • Sweating.
  • Trembling.
  • Feeling weak or tired.
  • Trouble concentrating or thinking about anything other than the present worry.

Why do I feel weird in the head?

Common ones include tension headaches, migraines, conditions that affect the sinuses, and ear infections. Abnormal or severe head pressure is sometimes a sign of a serious medical condition, such as a brain tumor or aneurysm. However, these problems are rare.