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Babesiosis
Babesiosis is an infection of the red blood cells. It’s caused by a parasite carried by deer ticks. It can…
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Bacterial Endocarditis
Bacterial, or infective, endocarditis (BE) is a type of infection. It occurs in the valves and inner lining of your…
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Bacterial Vaginosis (BV)
Bacterial vaginosis is a mild infection in the vagina caused by an overgrowth of bacteria. Researchers do not completely understand…
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Barrett’s Esophagus
Barrett’s esophagus is a condition often caused by GERD (gastroesophageal reflux disease). Learn how to help prevent and treat…
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Bartholin's Gland Cyst
Bartholin gland cysts are swollen vaginal glands near the opening of the vagina. Learn about causes and how to treat…
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Bedbugs
Bedbugs are parasites that can hide in mattresses and feed at night. Learn how to identify, treat, and prevent…
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Bell’s Palsy
Bell’s palsy is a condition that temporarily paralyzes the side of your face. Learn about the symptoms, causes, and…
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Benign Breast Conditions
A benign breast condition is a lump, cyst, or nipple discharge that is not cancerous. It can affect men and…
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Benign Paroxysmal Positional Vertigo (BPPV)
Benign paroxysmal positional vertigo (BPPV) is an inner ear problem that causes dizziness.
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Benign Prostatic Hyperplasia (BPH)
Benign prostatic hyperplasia (BPH) is the medical term for an enlarged prostate. This condition is associated with aging and mimics…
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Bipolar Disorder
Bipolar disorder is a mental illness that causes extreme mood swings between mania and depression. Learn about symptoms and…
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Bladder Stones
Bladder stones are hard masses found in your bladder. Symptoms are similar to those of kidney stones and urinary tract…
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Blepharospasm
Blepharospasm is involuntary blinking or twitching of your eyelid. It could be caused by stress or something more serious, such…
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Bloating
Bloating is pain, discomfort, and fullness that occurs in your abdomen (stomach). Bloating can be temporary or severe, depending on…
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Blood Clots
Blood clots are differently sized clumps of blood that can form inside your body. Most are harmless, unless the clot…
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Blood Poisoning
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
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Bone Cancer
Bone cancer often is caused by the spreading of cancer from another part of the body. Learn about the types…
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Breast Cancer
Breast cancer is a cancer that begins in breast tissue. It usually shows up as one of three types of…
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Breast Pain in Women
Breast pain is more common in younger women. It is not usually a sign of breast cancer.
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Bronchiolitis
Bronchiolitis is a common lung infection in infants and young children. It is often caused by a virus. Symptoms can…