Vaping & Headaches: Why They Happen & How to Stop Them

Although vaping is usually a pleasurable experience, it is sometimes associated with unwanted side effects. Can vaping cause headaches? Yes. In fact, headaches are one of the most common side effects associated with vaping, along with coughing, sore throat, dry mouth, increased heart rate, and dizziness.

The mere act of vaping, however, is unlikely to be the reason for the pounding in your head. Rather, the ingredients in e-liquids and biological factors are likely to be the culprits. 

In this article, we’ll explore the potential causes of vape headaches and migraines, and provide some recommendations for how to avoid them.

What does a vape headache feel like?

A vape headache may have unique causes, but it is not a unique experience. It generally feels like a standard tension headache. The primary symptom is usually a dull pain or pressure in the front, sides, or back of the head. Like most headaches, the duration is impossible to predict. One might experience a few minutes of discomfort, but it could potentially last for hours or even days.

Why does vaping give me a headache?

Inhaling anything—be it e-cigarette vapor, THC, CBD, or cigarette smoke—introduces foreign substances into the air passages and lungs. Some of these substances can disrupt the body’s delicate homeostasis, resulting in irritation and discomfort.

E-liquids usually contain four primary ingredients: propylene glycol (PG), vegetable glycerin (VG), flavorings, and nicotine. Understanding the nature and effects of these ingredients, particularly nicotine, is the first step in learning how to stop headaches from vaping.

Can nicotine give you a headache?

When trying to identify the cause of a vape headache, nicotine is suspect number one. While it offers plenty of benefits, nicotine can also negatively impact the central nervous system. Some of the common effects are lightheadedness, dizziness, sleep impairment, and headaches.

The human body has pain-sensitive nerves in the back of the throat that can be agitated by nicotine in vapor. Nicotine also constricts blood vessels, which reduces the flow of blood to the brain. Both factors can induce a vape headache—especially for inexperienced nicotine users. Conversely, experienced users who are dependent on nicotine risk experiencing withdrawal headaches if they suddenly dial back their intake.

For comparison, caffeine is associated with headaches for the same reason as nicotine: blood vessel constriction. And regular coffee drinkers who skip their morning cup become familiar with the unpleasantness of a withdrawal headache. When it comes to both caffeine and nicotine, consuming too much or too little can have consequences.

Note that headaches can be caused by any nicotine product, including patches, gum, and pouches.

Other causes of vape headaches

Non-nicotine users might be wondering, why does vaping give me a headache if I’m not using nicotine? Nicotine might be the most obvious instigator of headaches, but there are several other factors to consider.

Dehydration: Headaches are often a symptom of dehydration, which can be exacerbated by two of the main components of e-liquids: propylene glycol (PG) and vegetable glycerin (VG). These ingredients are hygroscopic; they absorb water. This is why vaping is often linked to dehydration and its related symptoms, such as headaches, dry mouth, and coughing. 

Flavorings: Some people are sensitive to certain flavors and aromas, such as those found in e-liquids and vapor. Minor irritations caused by the taste or smell of these e-liquids could trigger a headache. Note that aroma sensitivity is more often associated with migraines, which we’ll discuss in the next section. 

Sweeteners: There is a correlation between prolonged use of artificial sweeteners and headaches. A common offender is sucralose, which is often found in e-liquids.

Propylene glycol: As previously mentioned, propylene glycol (PG) is a main ingredient in most (not all) e-liquids. Frequent headaches after vaping could indicate PG sensitivity or (in rare cases) a PG allergy.

Can vaping cause a migraine?

Although we know that genetics play a role in migraines, the exact cause is still a mystery. Older research suggested that changes in blood flow to the brain could be responsible. More modern research poses that blood flow contractions (caused by hormonal changes) contribute to migraine pain, but they don’t initiate it.

Some studies have shown a correlation between migraines and cigarette smoking, but there is no conclusive evidence pointing to nicotine as a direct cause. However, because nicotine reduces blood flow to the brain, a connection to migraines would seem plausible.

Nicotine and cigarettes aside, can vaping cause a migraine? Possibly. Up to 95% of migraine sufferers experience hypersensitivity to odors, also known as osmophobia. Thus, aromatic vapor from certain e-liquid flavors could potentially trigger or intensify a migraine (or headache). Sucralose is also cited as a trigger for some, but a causal relationship has yet to be established.

Triggers vary widely from person to person, making them difficult to predict. Vapers prone to migraines should be mindful of correlations between the use of certain flavors and migraine attacks.