Waterhouse-Friderichsen syndrome (WFS) is a group of symptoms that occur when the adrenal glands fail to function normally. This is caused by bleeding into the glands.

Fulminant meningococcemia - Waterhouse-Friderichsen syndrome; Fulminant meningococcal sepsis - Waterhouse-Friderichsen syndrome; Hemorrhagic adrenalitis

The adrenal glands are two triangle-shaped glands. One gland is located on top of each kidney. The adrenal glands produce and release different hormones that the body needs to function normally. The adrenal glands can be affected by many diseases, such as infections like WFS.

WFS is caused by severe infection with meningococcus bacteria or other bacteria such as:

• Group B streptococcus
• Pseudomonas aeruginosa
• Streptococcus pneumoniae
• Staphylococcus aureus

Symptoms occur suddenly. They are due to the bacteria growing in large numbers inside the body. Symptoms include:

• Fever and chills
• Joint and muscle pain
• Headache
• Vomiting

The infection with bacteria causes bleeding throughout the body, which causes:

• A rash throughout the body
• Disseminated intravascular coagulation, in which small blood clots cut off the blood supply to the organs
• Septic shock

Bleeding into the adrenal glands makes the glands unable to produce enough adrenal hormones. This is called an adrenal crisis, and it leads to symptoms such as:

• Dizziness, weakness
• Very low blood pressure
• Very fast heart rate
• Confusion or coma

Your health care provider will perform a physical exam and ask about your symptoms.

Blood tests will be done to confirm a bacterial infection. Tests may include:

• Blood culture
• Complete blood count with differential
• Blood clotting studies

If your provider suspects the infection is caused by meningococcus bacteria, other tests that may be done include:

• Lumbar puncture to get a sample of spinal fluid for culture
• Skin biopsy and Gram stain
• Urine analysis

Tests that may be ordered to help diagnose acute adrenal crisis include:

• ACTH (cosyntropin) stimulation test
• Cortisol blood test
• Blood sugar
• Potassium blood test
• Sodium blood test
• Blood pH test

Antibiotics are started right away to treat the bacterial infection. Glucocorticoid medicines will also be given to treat adrenal gland insufficiency. Supportive treatments will be needed for other symptoms.

WFS is fatal unless treatment for the bacterial infection is started right away and glucocorticoid medicines are given.

To reduce the risk of WFS caused by meningococcal bacteria, a vaccine against the bacteria is available.

Auchus RJ, Flück Pandey CE. The adrenal cortex. In: Melmed S, Auchus RJ, Goldfine AB, Rosen CJ, Kopp PA, eds. Williams Textbook of Endocrinology. 15th ed. Philadelphia, PA: Elsevier; 2025:chap 13.

Stephens DS. Neisseria meningitidis. In: Blaser MJ, Cohen JI, Holland SM, et al, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 10th ed. Philadelphia, PA: Elsevier; 2026:chap 216.