Main content Fatigue and Signs of a Serious Illness

    Fatigue and Signs of a Serious Illness



    Signs of serious illness include:

    • Severe neck stiffness or pain.
    • Confusion or extreme irritability.
    • Extreme sleepiness.
    • Persistent nausea or vomiting.
    • Fever.
    • Yellow color to the skin or eyes (Reference jaundice Opens New Window).
    • Abnormal bleeding, such as unexpected vaginal bleeding, rectal bleeding, or blood in the urine.
    • Severe sensitivity to light (Reference photophobia Opens New Window).
    • Unsteadiness or dizziness that prevents standing or walking (ataxia or vertigo).
    • New double vision, blurred vision, or blind spots.
    • Very fast or difficult breathing.
    • Very fast, very slow, or irregular heart rate (Reference arrhythmia Opens New Window).
    • Profuse sweating (diaphoresis).
    • Severe pain.
    • New and different skin rash.
    • An increase in the size and number of bruises.

    When fatigue occurs along with other signs of a serious illness, a visit to a doctor is required.

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