Why Do I Feel Hot But No Fever?

Why Do I Feel Hot But No Fever?

Feeling hot without a fever can be an indication of many different conditions. It can be a sign of dehydration, heatstroke, anxiety, or even menopause.

The reason you feel hot might be due to the environment you are in or what you are wearing.

If you are feeling hot and your temperature is normal, drink lots of fluids and try to cool down in the shade.

What is Considered a Fever?

A fever is a spike in body temperature. The normal body temperature is 98.6 degrees Fahrenheit and most adults will notice a fever when their temperature reaches 101 degrees Fahrenheit.

If the fever persists for more than 24 hours without treatment, it may be time to visit your doctor. The length of time it takes for a fever to break typically varies depending on the age of the patient.

For infants, the average time it takes for a fever to break is three days whereas, for adults, the average time it takes for a fever to break is two days.

Factors That Can Make You Feel Hot

Hot Weather

Heat can trigger a sensation of heat that feels like a fever but is called heat syncope. This is most often seen in children and pregnant women. However, anyone can suffer from heat syncope.

Heat syncope is caused by the body’s inability to dissipate heat quickly enough because of sweat evaporation or high humidity. In some cases, it can be an early sign of dehydration or heart problems.

In other cases, it may be an indicator of diabetes or an infection. A person with heat syncope may also have symptoms such as nausea, vomiting, dizziness, and confusion.

Strenuous Exercise

Feeling hot without a fever can be a sign of exercise-induced hyperthermia. This is often caused by an imbalance between the heat produced and the heat lost by the body.

The simplest way to handle this is to take a break from strenuous exercise and cool down with water or other cool drinks. If you continue to exercise, you should drink more fluids and wear lighter clothing.

Certain Foods or Drinks

There are many factors that can make you feel hot without a fever. One of these factors is the consumption of drinks or foods that have a lot of caffeine, sugar or alcohol in them. These substances can make you feel hot from their diuretic effect on the body.

Certain Clothing

Some clothes make you feel hot even though you don’t have a fever. This can be caused by the fabric of the clothing, the color of the clothing, or just your perception of what you’re wearing.

It could also be that you’re just feeling hot because of the weather. Usually, wearing lighter colors and fabrics will help with this problem.

Medical Factors


Anxiety is the feeling of unease, worry, or dread that sometimes comes with uncertain situations. You may be able to feel it in your chest, stomach, or head. Anxiety can make you feel hot without an accompanying fever. I

t can make you feel sweaty. You may feel that your heart is beating fast or pounding. You may be afraid of dying, going crazy, making mistakes, or doing something embarrassing.


Hyperthyroidism is the condition of having an overactive thyroid gland. One of the symptoms is feeling hot or feeling constantly warm, but not having a fever.

The thyroid gland is responsible for producing hormones that regulate metabolism, heart rate, body temperature, and many other bodily functions. When the thyroid gland produces too many hormones, it can cause hyperthyroidism.


In the summer, it’s not unusual to feel hot without an accompanying fever. You sweat because your body is trying to cool you down. But for those with anhidrosis, the summer heat can be a source of misery as they don’t sweat at all.

This condition can make you feel hot without an accompanying fever and it’s usually caused by a problem with your autonomic nervous system, which regulates your sweat glands.


Diabetes can also make you feel hot without an accompanying fever. This is because it can make you dehydrated or overheated, which leads to an increased body temperature.

Other symptoms include fatigue, blurred vision, thirst, nausea, and vomiting. If you are experiencing these symptoms and are not currently taking medications for diabetes, please go to your doctor immediately.

Pregnancy and Menstrual Cycles

It is also possible to feel hot without an accompanying fever, especially during pregnancy or while menstruating. Women have higher body temperatures than men, so it’s not unusual for women to feel hot even when their body temperature is normal.

If you are pregnant, your body produces hormones that can make you feel hotter than usual. Women also have more sweat glands than men, so it’s also possible that you are sweating more without feeling sick. If you are menstruating, your uterus is releasing blood and fluids that can cause heat flashes.

To prevent heat flashes during pregnancy or menstruation, stay hydrated by drinking plenty of water and eating salty foods to help with fluid retention. Try to avoid drinking alcohol or caffeinated drinks because they cause dehydration. Wear light clothing and use an electric fan for air circulation if you cannot regulate your temperature at home.

Menopause and Perimenopause

Many people experience hot flashes during perimenopause and menopause. These symptoms are often temporary and will go away on their own once the hormone levels even out.

In order to control symptoms, doctors recommend that you dress in layers, stay hydrated, exercise, avoid stress, and reduce alcohol consumption.

What is the Remedy When You’re Feeling Hot but Have no Fever?

Feeling hot without an accompanying fever is most often related to dehydration. When you’re dehydrated, your body can’t cool itself as well as it should, so it relies on sweating. When the outside air temperature is really hot, this natural cooling mechanism can’t work as well, and your body’s temperature will rise even if you’re not running a fever.

To remedy this problem, drink lots of water and other liquids. On days when the temperature is very high and you’re feeling hot without a fever, try to drink at least two liters (about 8 cups) of water or other fluids every day.

If your symptoms don’t improve after following these steps for a few days, contact your doctor for help with determining the cause of your symptoms.

Final Thoughts

It is a common misconception that feeling hot without an accompanying fever is not a serious condition. In some cases, the person may have a temperature of 100 degrees Fahrenheit or higher, but they may not have a fever. In other cases, the person might be feeling hot without having any other symptoms at all.

When someone has a fever, these symptoms will likely be present. The best way to tell if someone is feeling hot without having a fever is to take their temperature.

There are many different types of tests that can be used to measure a person’s temperature, including taking their oral temperature with a thermometer or measuring it with a forehead thermometer.

Visiting a doctor is important to avoid complications in the future.

About the author

Johnny is dedicated to providing useful information on commonly asked questions on the internet. He is thankful for your support ♥

Leave a Comment