Some symptoms may require urgent medical evaluation. Know when to seek emergency care.
A fever is a temporary increase in body temperature, often due to an illness. A fever is a sign that something out of the ordinary is going on in your body. For an adult, a fever may be uncomfortable, but usually isn't a cause for concern unless it reaches 103°F (39.4°C) or higher.
This content is for informational purposes only and does not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical concerns. In case of emergency, call 911 or your local emergency services immediately.
People with fever often experience: • Feeling hot and sweaty • Chills and shivering • Headache and body aches • Weakness and fatigue • Loss of appetite • Dehydration signs • Skin feels warm to touch
Temperature between 99°F (37.2°C) and 100.4°F (38°C).
Temperature between 100.4°F (38°C) and 102.2°F (39°C).
Temperature above 102.2°F (39°C). May require medical attention.
Extremely high fever above 106°F (41°C). Medical emergency.
Common cold, flu, COVID-19, and other viral illnesses.
Strep throat, urinary tract infection, pneumonia.
Rheumatoid arthritis, lupus, and other autoimmune diseases.
Exposure to hot weather or strenuous exercise in heat.
Some antibiotics, antihistamines, and blood pressure medications.
Fever above 103°F in adults, or fever lasting more than 3 days, requires medical attention. Fever in infants under 3 months always needs emergency care.
Rest, drink plenty of fluids, take acetaminophen or ibuprofen as directed, and use cool compresses. Don't use cold water baths as they can cause shivering.
Monitor your symptoms, track medications, and keep all your health records in one secure place. Join thousands taking control of their health.
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January 2025
我们定期审查和更新内容，确保反映最新的医学研究和临床实践。
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Internal Medicine Physician
Internal Medicine
Dr. Rodriguez is a board-certified internist with expertise in primary care and preventive medicine.
Remember: In case of a medical emergency, call 911 immediately.
This page is for informational purposes only and does not replace professional medical advice.
