All Diseases

Blind loop syndrome occurs when part of the small intestine becomes bypassed. The "blind loop" formed by the bypassed intestine means food can't move normally through the digestive tract. The slowly moving food and waste products become a breeding ground for bacteria, which can lead to a condition called bacterial overgrowth. As a result, nutrients may not be fully absorbed. Blind loop syndrome often causes diarrhea and may cause weight loss and malnutrition.

Blind loop syndrome — sometimes called stasis syndrome or stagnant loop syndrome — often occurs as a complication of stomach (abdominal) surgery. But blind loop syndrome can also result from structural problems and some diseases. Sometimes surgery is needed to correct the problem, but antibiotics are the most common treatment.

When you have a blocked tear duct, your tears can't drain normally, leaving you with a watery, irritated eye. Blocked tear ducts are caused by a partial or complete obstruction in the tear drainage system.

Blocked tear ducts are common in newborns, but they usually get better without any treatment during the first year of life. In adults, a blocked tear duct may be due to an injury, infection or a tumor.

A blocked tear duct almost always is correctable. Treatment depends on the cause of the blockage and your age.

Seeing blood in your urine can cause anxiety. While in many instances there are benign causes, blood in urine (hematuria) can also indicate a serious disorder.

Blood that you can see is called gross hematuria. Urinary blood that's visible only under a microscope is known as microscopic hematuria and is found when your doctor tests your urine. Either way, it's important to determine the reason for the bleeding. Treatment depends on the underlying cause.

Body dysmorphic disorder is a type of chronic mental illness in which you can't stop thinking about a flaw in your appearance — a flaw that is either minor or imagined. But to you, your appearance seems so shameful that you don't want to be seen by anyone.

When you have body dysmorphic disorder, you intensely obsess over your appearance and body image, often for many hours a day. Your perceived flaw causes you significant distress, and your obsession impacts your ability to function in your daily life. You may seek out numerous cosmetic procedures or excessively exercise to try to "fix" your perceived flaw, but you're never satisfied. Body dysmorphic disorder is also known as dysmorphophobia, the fear of having a deformity.

Treatment of body dysmorphic disorder may include medication and cognitive behavioral therapy.

Body lice are tiny insects, about the size of a sesame seed. Body lice live in your clothing and bedding and travel to your skin several times a day to feed on blood. The most common sites for bites are around the waist, groin and armpits — places where clothing seams are most likely to touch skin.

Body lice are most common in crowded and unhygienic living conditions, such as refugee camps and shelters for the homeless. Body lice bites can spread certain types of diseases and can even cause epidemics.

Clothing and bedding that have been infested with body lice should be laundered in hot, soapy water and machine dried using the hot cycle.

Boils and carbuncles are painful, pus-filled bumps that form under your skin when bacteria infect and inflame one or more of your hair follicles.

Boils (furuncles) usually start as red, tender lumps. The lumps quickly fill with pus, growing larger and more painful until they rupture and drain. A carbuncle is a cluster of boils that form a connected area of infection under the skin.

You can usually care for a single boil at home, but don't attempt to prick or squeeze it — that may spread the infection. Call your doctor if a boil or carbuncle is extremely painful, lasts longer than two weeks or occurs with a fever.

Bone cancer is an uncommon cancer that begins in a bone. Bone cancer can begin in any bone in the body, but it most commonly affects the long bones of the arms and legs.

Several types of bone cancer exist. Some types of bone cancer occur primarily in children, while others affect mostly adults.

The term "bone cancer" doesn't include cancers that begin elsewhere in the body and spread (metastasize) to the bone. Instead, those cancers are named for where they began, such as breast cancer that has metastasized to the bone.

Bone cancer also doesn't include blood cell cancers, such as multiple myeloma and leukemia, that begin in the bone marrow — the jelly-like material inside the bone where blood cells are made.

Bone metastasis occurs when cancer cells spread from their original site to a bone. Nearly all types of cancer can spread (metastasize) to the bones. But some types of cancer are particularly likely to spread to bone, including breast cancer and prostate cancer.

Bone metastasis can occur in any bone but more commonly occurs in the pelvis and spine. Bone metastasis may be the first sign that you have cancer, or bone metastasis may occur years after cancer treatment.

Bone metastasis can cause pain and broken bones. With rare exceptions, cancer that has spread to the bones can't be cured. Treatments can help reduce pain and other symptoms of bone metastases.

Bone spurs are bony projections that develop along the edges of bones. Also called osteophytes, bone spurs often form where bones meet each other — in your joints. Bone spurs can also form on the bones of your spine.

The main cause of bone spurs is the wear-and-tear damage associated with osteoarthritis. Most bone spurs cause no symptoms and may go undetected for years. Bone spurs may not require treatment. Decisions about treatment depend on where spurs are located and how they affect your health.

Borderline personality disorder (BPD) is a mental health disorder that generates significant emotional instability. This can lead to a variety of other stressful mental and behavioral problems.

With borderline personality disorder, you may have a severely distorted self-image and feel worthless and fundamentally flawed. Anger, impulsiveness and frequent mood swings may push others away, even though you may desire to have loving and lasting relationships.

If you have borderline personality disorder, don't get discouraged. Many people with this disorder get better with treatment and can live satisfying lives.