In adults, doctors consider any temperature above 100.4 degrees Fahrenheit a high fever, MedicineNet states. Doctors recommend seeking medical attention immediately when a fever reaches 104 degrees. More »

A high fever is a one that is higher than the normal range, but what constitutes a high fever varies with individuals, according to Mayo Clinic. Adults should consult a doctor if a fever lasts more than three days and is... More »

www.reference.com Health Medical Ranges & Levels

According to the Mayo Clinic, a fever is not dangerous in adults until it reaches above 103 degrees Fahrenheit. Fevers are a normal process that helps to activate the body's immune system and fight infection, according t... More »

Symptoms of H1N1 in adults are much like traditional flu symptoms, including body aches, headache, fever, cough and sore throat, according to WebMD. Fatigue, chills and runny nose are additional symptoms; some people als... More »

Flu symptoms in adults include fever, severe pain in the muscles and joints, tiredness and pain around the eyes, extreme fatigue and weakness, headache and dry cough, notes WebMD. Other symptoms include red, watery eyes,... More »

www.reference.com Health Conditions & Diseases Cold & Flu

Symptoms of pneumonia in adults under age 60 include fever, chills, mucus-producing cough, rapid shallow breathing and chest pain that becomes worse with coughing. Older adults tend to have fewer of these symptoms but of... More »

According to the Mayo Clinic, a fever is not dangerous in adults until it reaches above 103 degrees Fahrenheit. Fevers are a normal process that helps to activate the body's immune system and fight infection, according t... More »