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What causes chills? 77 possible conditions

See a list of possible causes in order from the most common to the least.


Spinal Cord Abscess

This condition is considered a medical emergency. Urgent care may be required.

Spinal cord abscess (SCA) is a rare condition capable of causing permanent damage to the spinal cord. Abscesses are caused when injured tissue becomes infected. The body's immune system sends white blood cells to hel...

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The Many Sides of Bacterial Gastroenteritis

Bacterial infections are common causes of gastrointestinal infections. This type of infection is also called "food poisoning" and is often caused by poor hygiene or ingesting foods contaminated with bacteria.

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Legionnaires' Disease

Legionnaires' disease is a serious type of lung infection, or pneumonia, caused by bacteria. Fever, chills, cough, and head and muscle aches are common symptoms.

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This condition is considered a medical emergency. Urgent care may be required.

Peritonitis is the inflammation of a thin layer of tissue inside the abdomen. Caused by bacteria or fungus, it causes tenderness, bloating, fatigue, greying of the skin, and other problems.

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Kidney Stones

Kidney stones are solid masses of crystalized calcium or other substances that originate in the kidneys but can pass through the urinary tract. The greatest risk factor is making less than one liter of urine per day.

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Diverticula are bulging sacs that can appear in the lining of your large intestine. Diverticulitis occurs when these sacs get acutely infected or inflamed.

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Infective Endocarditis

Infective endocarditis is an infection of the heart, normally caused by bacteria in the blood stream. It is a serious medical condition. If left untreated, the infection can damage your heart and may even cause death.

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Acute Pancreatitis

Acute pancreatitis is an inflammation in the pancreas, which causes pain and swelling in the upper left side of the abdomen, nausea, and burping.

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Pelvic Inflammatory Disease (PID)

Pelvic inflammatory disease (PID) is an infection of the reproductive organs in women. It's marked by pain in the abdomen, especially during urination or sex.

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Mastitis is an infection of the ducts of the breast. It usually only occurs in women who are breastfeeding their babies.

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Pyelonephritis is an inflammation of the kidney and upper urinary tract. Symptoms include flushed skin, back pain, fever, and nausea.

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Urethritis is an infection of the urethra, the tube that carries urine from the bladder and semen out of the body. Symptoms include burning while urinating, abdominal pain, and discharge.

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Lyme Disease

Lyme disease is an infectious condition transmitted via tick bite. A "bull's eye" rash at the site of the bite is an early symptom of this disease.

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Migraine with Aura

Migraine is a disorder characterized by repeated attacks of severe headache. Symptoms include throbbing or pulsating pain, usually on only one side of the head, and can last between four hours and three days.

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Endocarditis is inflammation of the inner lining of the heart. Possible symptoms of this condition include pale skin, chills, and night sweats.

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Histoplasmosis is a noncommunicable disease caused by certain fungal spores. Red bumps on the lower legs are one sign of this condition.

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Systemic Gonococcal Infection

Gonorrhea is a sexually transmitted infection. One of its symptoms is a skin rash containing pink and/or red spots that become filled with pus.

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Lymphangitis is an inflammation of the lymphatic system, which is part of the immune system. It is a network of organs, cells, ducts, and glands.

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Toxic Shock Syndrome

This condition is considered a medical emergency. Urgent care may be required.

Toxic shock syndrome is a rare, serious condition caused by a bacterial infection. Rash is one of several common signs for this symptom.

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Addisonian Crisis (Acute Adrenal Crisis)

This condition is considered a medical emergency. Urgent care may be required.

People with Addison's disease don't make enough cortisol or aldosterone. Addisonian crisis is a potentially life-threatening condition indicated by nausea, abdominal pain, fever, and chills.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.