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Babesiosis
Babesiosis is a red blood cell infection caused by a parasite carried by deer ticks. Most infections happen in the…
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Bacterial Endocarditis
Bacterial endocarditis is an infection in the valves and inner lining of your heart.
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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 that affects your esophagus. It happens when acid from your stomach goes back up into…
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Bartholin's Gland Cyst
Bartholin’s gland cyst is a swelling that can occur near the opening of a woman’s vagina. They can become infected,…
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Bedbugs
Bedbugs are oval-shaped, wingless parasites. They have 6 legs and are about 1/5 of an inch long. They are white…
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Bell’s Palsy
Bell’s palsy is a condition that temporarily paralyzes the side of your face. It usually goes away on its own…
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Benign Breast Conditions
A breast cyst is a fluid-filled sac inside the breast. Breast cysts are common in women. They might cause a…
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Benign Paroxysmal Positional Vertigo (BPPV)
Benign paroxysmal positional vertigo can be caused by problems with the inner ear related to ear infections, family history, or…
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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 happy and sad. People of all ages and…
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Bladder Stones
Bladder stones are small crystals that form in your urine. They are hard and become trapped in your bladder. They…
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Blepharospasm
Blepharospasm is a rare condition that causes your eyelid to blink or twitch. You can’t control it. It’s caused by…
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Bloating
Bloating is when your stomach is filled with air or gas from what you eat, your lifestyle, or for medical…
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Blood Clots
Blood clots are clumps of blood that form inside your body and can be harmful or even deadly if they…
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Blood Poisoning (Sepsis)
Blood poisoning happens when an infection enters your bloodstream and your body reacts to the infection.
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Bone Cancer
Bone cancer is cancer that in most cases spreads to the bones from another part of the body. There are…
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Breast Cancer
Breast cancer is the second most common cancer among women, but its death rate has declined over the last few…
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Breast Pain in Women
Breast pain in women can be caused by many factors, most of which are not serious health threats.
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Bronchiolitis
Bronchiolitis is a common lung infection in infants and young children. It is usually caused by a virus. RSV is…
All conditions that start with the letter B
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