Muscle Cramps: Causes, Diagnosis and Treatments
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What causes muscle cramp? 17 possible conditions

Muscle cramps are sudden, involuntary contractions that occur in various muscles. These contractions are often painful and can affect different muscle groups. Commonly affected muscles include those in the back of your lower leg, the back of your thigh, and... Read more

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


Sprains & Strains

Sprains and strains are injuries to the body, often resulting from physical activity. These injuries are common and can range from minor to severe, depending on the incident. Most don't require medical attention.

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Peripheral Neuropathy

Peripheral neuropathy is a disorder that occurs when your peripheral nerves malfunction because they're damaged.

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Heat Emergencies

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

Heat emergencies are health crises caused by exposure to hot weather and sun. Heat emergencies have three stages: heat cramps, heat exhaustion, and heatstroke.

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Low Blood Potassium

Hypokalemia occurs when the blood's potassium levels are too low. A normal level of potassium is 3.6-5.2 millimoles per liter. Levels below 3.6 are considered low.

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Low Blood Sodium (Hyponatremia)

Low blood sodium, or hyponatremia, occurs when water and sodium are out of balance in your body. A quick drop in sodium levels can cause weakness, headache, nausea, and muscle cramps.

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Rickets is a disorder that can develop due to a lack of vitamin D, calcium, or phosphate. Learn about the symptoms, diagnosis, and treatment of rickets.

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Hypoparathyroidism is a rare condition that occurs when the parathyroid glands in the neck don't produce enough parathyroid hormone (PTH).

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Kidney Failure

Your body becomes overloaded with toxins if your kidneys can't do their regular job. This can lead to kidney failure and even be life-threatening.

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Diabetic Ketoacidosis

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

Diabetic ketoacidosis (DKA) is a serious complication that stems from diabetes. If you don't have enough insulin to help your body process sugars (glucose), your body will start burning fat to fuel itself. As a result...

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Glomerulonephritis is a serious illness that can be life-threatening and requires immediate treatment. The condition is sometimes called nephritis.

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ALS (Lou Gehrig's Disease)

Amyotrophic lateral sclerosis (ALS) is a degenerative disease that affects the brain and spinal cord. It causes loss of control of voluntary muscles.

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Marine Animal Bites or Stings

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

Many marine animals bite or sting. Some animals are venomous, while others can inflict deep bites. Learn more about the risks and prevention.

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Poisoning Due to Black Widow Spider Venom (Black Widow Spider Bites)

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

Learn how people often react to black widow spider bites. Read about how they can be treated and avoided.

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Chronic Kidney Disease

Chronic kidney disease (CKD) is the progressive and irreversible destruction of the kidneys. The most common causes of CKD are high blood pressure and diabetes.

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Celiac Disease (Gluten Intolerance)

Celiac disease is a digestive disorder caused by an abnormal immune reaction to gluten. Learn about celiac disease systems, diagnosis, and treatment.

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Medullary Cystic Disease

Medullary cystic kidney disease (MCKD) is a rare condition in which small, fluid-filled sacs called cysts form in the center of the kidneys. These cysts scar the kidneys and cause them to malfunction. In order t...

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Adrenal Cortical Carcinoma

Adrenal cortical carcinoma is a rare disease caused by a cancerous growth in the adrenal cortex.

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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.