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What causes swelling? 34 possible conditions

Swelling occurs whenever the organs, skin, or other parts of your body enlarge. It is typically the result of inflammation or a buildup of fluid. Swelling can occur internally, or it can affect your outer skin and muscles. A range of conditions can cause... Read more

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

1

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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2

Allergies Overview

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

Learn about what causes allergies, the different types of allergies, and how they're treated.

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3

Congestive Heart Failure (CHF)

Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. CHF refers to fluid buildup around your heart.

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4

Hives

Hives, or urticaria, are itchy, raised welts that are found on the skin. Hives are often caused by an allergic reaction to a medication or an irritant.

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5

Bruises

A bruise or "contusion" appears on the skin when it has suffered trauma such as a cut or a blow to the area. The injury causes tiny blood vessels called capillaries to burst, and the blood gets trapped below the skin

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6

Hypothyroidism

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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7

Fracture

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

A fracture is a broken bone. Learn about the risk factors, symptoms, and treatments for different types of fracture.

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8

Diabetic Nephropathy

Diabetic nephropathy is a type of progressive kidney disease that occurs in people who have type 1 or type 2 diabetes. The University of Washington estimates that 20 to 40 percent of people with diabetes will ge...

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9

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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10

Burns

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

Burns are characterized by severe skin damage that causes the affected cells to die. Most people can recover from burns without serious health consequences.

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11

Bone Tumor

Bone tumors are masses of abnormal cells within the bone. Depending on the cause, these tumors may be malignant (cancerous) or benign (non cancerous).

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12

Sprains

A sprain is an injury to the ligaments around your joints. Ligaments are tissues that connect bones to other bones. Sprains occur when these ligaments tear or stretch. Certain parts of your body-such as your ankles...

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13

Bone Infection (Osteomyelitis)

A bone infection may occur when bacteria or fungi invade the bone, causing many symptoms, including fever, redness, stiffness, and swelling.

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14

Glomerulonephritis

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

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15

Chemical Burns

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

Find information about chemical burns and how to prevent them. Learn about the causes, symptoms, and treatment of chemical burns.

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16

Acute Kidney Tubular Necrosis

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

Acute kidney tubular necrosis is caused when blood cannot reach the tissues and cells of the kidneys due to a blockage or restriction. This causes damage.

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17

First Degree Burn

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

A first-degree burn is an injury that affects the first layer of your skin. First-degree burns are one of the mildest forms of skin injuries.

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18

Osteosarcoma

Osteosarcoma is a bone cancer that typically develops in the shinbone near the knee, the thighbone near the knee, or the upper arm bone near the shoulder.

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19

Bartholin's Abscess

Bartholin's abscesses occur when the Bartholin's glands, located on either side of the opening of the vagina, become obstructed and infected. If the gland becomes blocked, a cyst will usually form first.

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20

Addisonian Crisis (Acute Adrenal Crisis)

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

An Addisonian crisis occurs when levels of cortisol suddenly drop. Learn more about an Addisonian crisis, including symptoms, risk factors, and treatment.

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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.
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