Body lice are small parasitic insects that live in clothing seams and bedding and feed on human blood by moving onto the skin. Unlike head lice, body lice do not live on the scalp but stay in clothing and only come to the skin to feed. Infestation is most commonly associated with poor hygiene and crowded living conditions. Body lice …

Burning mouth syndrome is a condition characterized by a persistent burning or scalding sensation in the mouth without an obvious cause. The discomfort most commonly affects the tongue but may also involve the lips, gums, palate, or the entire mouth. Burning mouth syndrome can significantly affect quality of life and is more common in middle-aged and older adults. The condition …

Blood in urine, medically known as hematuria, is a condition in which red blood cells are present in the urine. The urine may appear pink, red, or cola-colored, or the blood may only be detectable under a microscope. Hematuria can be temporary and harmless in some cases, but it may also be a sign of an underlying medical condition affecting …

Ureteral obstruction is a condition in which the normal flow of urine from the kidneys to the bladder is partially or completely blocked in one or both ureters. This blockage can cause urine to back up into the kidneys, leading to swelling and increased pressure, a condition known as hydronephrosis. Ureteral obstruction may develop suddenly or gradually and can affect …

A blocked tear duct is a condition in which the normal flow of tears from the eye into the nose is partially or completely obstructed. Tears are produced to keep the eyes moist and are normally drained through small openings in the eyelids into the tear ducts. When this drainage system is blocked, tears can overflow onto the face or …

Blepharitis is a common eye condition characterized by inflammation of the eyelids, particularly along the edges where the eyelashes grow. It often occurs when the tiny oil glands near the base of the eyelashes become clogged or irritated. Blepharitis is usually a chronic condition that can flare up periodically, but it is not contagious. Although blepharitis can be uncomfortable and …

Blastocystis hominis is a microscopic organism that lives in the digestive tract. It is one of the most common intestinal parasites found in humans worldwide. In many people, Blastocystis hominis does not cause symptoms and is discovered incidentally during stool testing. In others, it may be associated with gastrointestinal discomfort. The role of Blastocystis hominis in causing disease is not …

Interstitial cystitis, also known as painful bladder syndrome, is a chronic condition characterized by bladder pressure, bladder pain, and discomfort in the pelvic region. Unlike urinary tract infections, interstitial cystitis is not caused by bacteria and does not respond to antibiotics. The severity of symptoms can vary over time, with periods of flare-ups and remission. Symptoms Chronic pelvic pain or …

Bladder exstrophy is a rare congenital condition in which the bladder develops outside the body. It occurs when the lower abdominal wall and the front of the bladder do not form properly during fetal development. As a result, the inner surface of the bladder is exposed, and urine drains directly from the bladder rather than being stored normally. Bladder exstrophy …

Urinary incontinence is the involuntary leakage of urine due to loss of bladder control. It can range from occasional minor leaks to frequent and severe urine loss that interferes with daily activities. Urinary incontinence affects people of all ages but is more common in older adults and women. The condition is not a normal part of aging and often results …