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What causes muscle pain? 77 possible conditions

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


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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Colorado Tick Fever

An infected Rocky Mountain Wood tick can spread Colorado tick fever, a viral infection. A faint, occasional rash is one symptom of this condition.

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Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

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Porphyrias are rare types of genetic blood disorders in which patients have a defect in heme production, an important part of hemoglobin. Blisters are a sign of porphyria cutanea tarda, the most common type of porphyria.

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Cellulitis is a common, often painful skin infection that first appears as a red, swollen area that feels hot and tender to the touch. If left untreated, it can become life-threatening.

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Viral Gastroenteritis

Viral gastroenteritis, also known as the stomach flu, is caused by a number of different viruses. Its symptoms usually last for two to three days.

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Infectious Mononucleosis

Infectious mononucleosis, or "mono," is a group of symptoms caused by the Epstein-Barr virus. One potential symptom is a pink rash that looks like the measles.

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Peripheral Vascular Disease

Peripheral vascular disease is a circulation disorder caused by plaque build-up in peripheral arteries. It typically affects the arteries that supply blood to the arms, legs, and organs located below the stomach.

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Adult-Onset Still's Disease

This relatively rare inflammatory condition begins with fever and may lead to arthritis. Women and people between the ages of 16 and 46 are most at risk.

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Measles is a very contagious infection of the respiratory system. One of its several symptoms is a sore or swollen throat.

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MRSA (Staph) Infection

MRSA (methicillin-resistant Staphylococcus) is a type of contagious bacterial infection that is resistant to beta-lactam antibiotics. CA-MRSA typically causes lesions that are red, swollen, and painful to touch.

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Pneumonia is an infection of the lungs caused by fungi, bacteria, or viruses. General symptoms include chest pain, fever, cough, and difficulty breathing.

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The Atypical Facts About Atypical Pneumonia

Pneumonia is an infection that causes inflammation of the lungs. Atypical pneumonia is a kind that isn't caused by the bacteria that causes typical pneumonia.

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The thyroid gland produces a hormone that controls how your cells use energy (metabolize). Hypothyroidism occurs when the body doesn't produce enough. Untreated, it can cause complications like obesity and heart disease.

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Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system. It is most likely to be contracted by children under five years old.

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Typhus fevers are caused by a bacteria that is transmitted by bites from fleas, ticks, mites, and other arthropods. Rash is a common symptom of typhus.

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The Plague

The plague is a serious bacterial infection that can be deadly. It's caused by poor sanitation, overcrowding, and large rodent populations.

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Rabies is caused by a virus that affects the central nervous system. It can be transmitted by bites and scratches from an infected animal, often a dog.

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Parkinson's Disease

Parkinson's disease (PD) is a progressive neurological disorder. It first presents with problems of movement. Smooth and coordinated muscle movements of the body are made possible by a substance in the brain calle...

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Endometriosis is a disorder in which the tissue that forms the lining of your uterus grows outside of your uterine cavity. The lining is called the endometrium.

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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.