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.
This content is medically reviewed for accuracy and reliability
This content has been reviewed by medical professionals to ensure it meets the latest medical standards and clinical practice guidelines.
Our content is created by a team of licensed physicians, nurses, and medical writers to ensure accuracy, clarity, and practical utility.
All health information is based on peer-reviewed research, clinical guidelines, and recommendations from authoritative health organizations like CDC, WHO, and Mayo Clinic.
January 2025
We regularly review and update our content to reflect the latest medical research and clinical practices.
The information provided on this website is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical concerns. In case of emergency, call emergency services immediately.
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.
