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Malaise

Definition

Malaise is a general feeling of discomfort, illness, or lack of well-being.

Alternative Names

General ill feeling

Considerations

Malaise is a symptom that can occur with almost any health condition. It may start slowly or quickly, depending on the type of disease.

Fatigue (feeling tired) occurs with malaise in many diseases. You can have a feeling of not having enough energy to do your usual activities.

Causes

The following lists give examples of the diseases, conditions, and medicines that can cause malaise.

SHORT-TERM (ACUTE) INFECTIOUS DISEASE

• Acute bronchitis or pneumonia
• Acute viral syndrome
• COVID-19
• Infectious mononucleosis (EBV)
• Influenza
• Lyme disease

LONG-TERM (CHRONIC) INFECTIOUS DISEASE

• AIDS
• Chronic active hepatitis
• Disease caused by parasites
• Tuberculosis

HEART AND LUNG (CARDIOPULMONARY) DISEASE

• Congestive heart failure
• Chronic obstructive pulmonary disease (COPD)

ORGAN FAILURE

• Acute or chronic kidney disease
• Acute or chronic liver disease

CONNECTIVE TISSUE DISEASE

• Rheumatoid arthritis
• Sarcoidosis
• Systemic lupus erythematosus

ENDOCRINE or METABOLIC DISEASE

• Adrenal gland dysfunction
• Diabetes
• Pituitary gland dysfunction (rare)
• Thyroid disease

CANCER

• Leukemia
• Lymphoma (cancer that starts in the lymph system)
• Solid tumor cancers, such as colon cancer

BLOOD DISORDERS

• Severe anemia

PSYCHIATRIC

• Depression
• Dysthymia

MEDICINES

• Anticonvulsant (antiseizure) medicines
• Antihistamines
• Beta blockers (medicines used to treat heart disease or high blood pressure)
• Psychiatric medicines
• Treatments involving several medicines

Home Care

Contact your health care provider right away if you have severe malaise.

When to Contact a Medical Professional

Contact your provider if:

• You have other symptoms with the malaise
• Malaise lasts longer than one week, with or without other symptoms

What to Expect at Your Office Visit

Your provider will perform a physical exam and ask questions such as:

• How long has this feeling lasted (weeks or months)?
• What other symptoms do you have?
• Is the malaise constant or episodic (comes and goes)?
• Can you complete your daily activities? If not, what limits you?
• Have you traveled recently?
• What medicines are you taking?
• What are your other medical problems?
• Do you use alcohol or other drugs?

You may have tests to confirm the diagnosis if your provider thinks the problem may be due to an illness. These may include blood tests, x-rays, or other diagnostic tests.

Your provider will recommend treatment if needed based on your exam and tests.

References

Melia MT. Approach to fever or suspected infection in the normal host. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 259.

Nield LS, Kamat D. Fever. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics. 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 219.

Simel DL. History and physical examination. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 6.

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