Diseases and Conditions

Babesiosis is an infection of the red blood cells. It’s caused by a parasite carried by deer ticks. It can…

Bacterial, or infective, endocarditis (BE) is a type of infection. It occurs in the valves and inner lining of your…

Bacterial vaginosis is a mild infection in the vagina caused by an overgrowth of bacteria. Researchers do not completely understand…

Barrett’s esophagus is a condition that affects your esophagus. It happens when acid from your stomach goes back up into…

The Bartholin’s gland is located on a woman’s vaginal lips. If skin grows over the opening to one of these…

Bedbugs are parasites that can hide in mattresses and feed at night. Learn how to identify, treat, and prevent…

Bell’s palsy is a condition that temporarily paralyzes the side of your face. It can affect all or part of…

A benign breast condition is a lump, cyst, or nipple discharge that is not cancerous. It can affect men and…

Benign paroxysmal positional vertigo (BPPV) is an inner ear problem that causes dizziness.

Benign prostatic hyperplasia (BPH) is the medical term for an enlarged prostate. This condition is associated with aging and mimics…

Bipolar disorder is a mental illness that causes extreme mood swings between happy and sad. People of all ages and…

Bladder stones are hard masses found in your bladder. Symptoms are similar to those of kidney stones and urinary tract…

Blepharospasm is a rare condition that causes your eyelid to blink or twitch. You can’t control it. It’s caused by…

Bloating is pain, discomfort, and fullness that occurs in your abdomen (stomach). Bloating can be temporary or severe, depending on…

Blood clots are differently sized clumps of blood that can form inside your body. Most are harmless, unless the clot…

What is blood poisoning? Blood poisoning has nothing to do with poison. It is an early stage of sepsis. Sepsis is a life-threatening infection in your bloodstream. Untreated blood poisoning can cause sepsis. Sepsis can cause organ failure and death. Sepsis is unpredictable

Bone cancer is cancer of the bones. Most cases of bone cancer start in other areas and spread to the…

Breast cancer is a cancer that begins in breast tissue. It usually shows up as one of three types of…

Breast pain is any level of discomfort or pain in one or both breasts. It’s more common in younger women…

Bronchiolitis is a common lung infection in infants and young children. It is usually caused by a virus. RSV is…