Why My Body Temperature Is Always High
Feeling constantly warm or having a body temperature that reads higher than normal can be unsettling. Many people wonder why they feel hot while others around them don’t. This article explores common reasons, how to interpret your readings, and when to seek medical help.
What Is a Normal Body Temperature?
The average normal body temperature is about 98.6 °F (37 °C), but it can vary by person, time of day, and measurement method. Most healthy adults fall between 97.5 °F (36.4 °C) and 99 °F (37.2 °C).
How Body Temperature Is Measured
- Oral – 1–2 minutes under the tongue.
- Rectal – 2–3 minutes; slightly higher reading.
- Axillary (underarm) – 5 minutes; usually 0.5 °F lower.
- Tympanic (ear) – quick and accurate.
Consistency in the method helps track changes over time.
Common Symptoms of a Persistently High Temperature
When your body stays warm, you may notice:
- Persistent fatigue or weakness
- Night sweats or feeling hot at night
- Frequent headaches or dizziness
- Shortness of breath or rapid heartbeat
- Unexplained weight loss or gain
- Muscle aches or joint pain
These signs can point to underlying conditions or lifestyle factors.
Possible Causes of a High Body Temperature
Below are medically recognized factors that can raise your core temperature. Each should be evaluated by a healthcare professional.
1. Infections and Inflammatory Conditions
Even mild infections can cause a temporary rise. Chronic conditions such as:
- Severe viral or bacterial infections
- Autoimmune disorders (e.g., lupus, rheumatoid arthritis)
- Inflammatory bowel disease
2. Hormonal Imbalances
Hormones regulate heat production. Imbalances may include:
- Hyperthyroidism – excess thyroid hormone increases metabolism.
- Menopause or perimenopause – fluctuating estrogen levels.
- Polycystic ovary syndrome (PCOS)
3. Medications and Substances
Some drugs raise body temperature as a side effect:
- Antibiotics and antivirals
- Antidepressants and antipsychotics
- Stimulants (e.g., caffeine, nicotine)
- Alcohol or recreational drugs
4. Environmental and Lifestyle Factors
External conditions and habits can influence how warm you feel:
- Hot or humid climates
- Heavy clothing or inadequate ventilation
- Intense physical activity or exercise
- High caffeine or spicy
