Check your symptoms and
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Reviewed By:

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

Unnati Patel

Unnati Patel, MD, MSc (GP / Family doctor)

From our team of 50+ doctors

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With an easy 3-min questionnaire, Ubie's AI-powered system will generate a free report on possible causes.

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People with these symptoms also use Ubie's symptom checker to find possible causes

  • Has over 100.4°F / 38°C heat

  • Persistently having fever of 102.2°F / 39°C for a whole day and it spikes even higher once in a while

  • Fever subsided to normal temperatures for a while but came back again

  • Persistent fever of 100.4°F / 38°C or more for more than 7 days

  • Baby has a fever but is otherwise healthy and energetic

  • Fever is going too high, 106.7°F / 41.5°C or higher

  • Keep getting high temperatures (>100.4°F / 38°C)

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Content updated on Jan 4, 2023

About the symptom

A fever is an increase in body temperature.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Repeated fever above 38 ℃

  • Difficulty breathing / breathlessness

  • Gross hematuria

  • Peripheral cyanosis

  • Sensation of incomplete voiding

  • Respiratory wheeze

  • Seizure attack

Possible causes

  • Viral mucositis

  • Chronic pyelonephritis

    A type of urinary tract infection, characterized by repeated and chronic bacterial infection of the kidneys.

  • Dengue fever

    This is caused by the dengue virus, carried by infected Aedes mosquitoes. There are 4 subtypes of dengue virus. Infections are more severe among immunocompromised people, the elderly, and young children. If a person is infected for a second time, this can be associated with more severe disease, because the antibodies produced from the first infection can cross-react with the new virus. Severe forms of dengue fever can be fatal.

  • Common cold (upper respiratory tract infection)
  • Meckel's diverticulosis

Related serious diseases

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you have a fever?

  • Do you have a cough?

  • Do you have headaches or does your head feel heavy?

  • Do you have a sore throat?

  • Do you have a runny nose?

Other Related Symptoms

Similar symptoms or complaints

Symptoms treated by the same specialty


  • High temperature (fever) in adults


Reviewed By:

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

Unnati Patel

Unnati Patel, MD, MSc (GP / Family doctor)

From our team of 50+ doctors

Just 3 minutes.
Developed by doctors.

Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD


Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD


Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

Seiji Kanazawa

Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

View our medical experts