Conditions

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Decompression sickness (DCS) is a rare condition that can occur in deep sea divers, aviators, miners, astronauts, mountain climbers or people who work at high or low altitudes...


Decortication is a video-assisted thoracic surgery (VATS) procedure done to remove a layer of fibrous tissue that has formed around a lung. An infection, pneumonia, fibrothorax or mesothelioma are the most common causes of this coating...


Deep brain stimulation (DBS) is a surgical treatment that implants a brain pacemaker device that sends electrical impulses to specific parts of the brain...


Venous disease describes a range of disorders affecting your veins. Venous disease can occur as a result of malfunctioning valves or blood clots in your veins or weakening in your blood vessel walls...


Degenerative spondylolisthesis is a condition in which a bone (vertebra) in the lower part of the spine (lumbar spine) slips out of its proper position due to degenerative disease such as arthritis...


Dementia is a general term for the loss of mental functions such as memory, reasoning, and thinking that is so severe it interferes with a person’s ability to function...


Demyelinating neuropathy, also known as chronic inflammatory demyelinating polyneuropathy (CIDP), is a rare, degenerative peripheral nerve disorder which inhibits sensation and weakens reflexes...


Diabetes is a chronic disease marked by high levels of sugar in the blood. Diabetes can be caused by too little insulin, resistance to insulin, or both...


Diabetes that is not properly controlled can lead to periodontal (gum) diseases in both young and old people. Periodontal diseases are infections of the gums and bone that hold the teeth in place...


Diabetes-related foot conditions are common complications of diabetes. Individuals with diabetes can develop a variety of foot problems that can lead to serious complications, even amputation...


Diabetes-related foot conditions are common complications of diabetes. Individuals with diabetes can develop a variety of foot problems that can lead to serious complications, even amputation. These problems most often occur because of nerve damage, also called neuropathy.


Diabetic foot is a medical term for multiple problems and complications that can happen to people with diabetes. Over time, the high blood sugar levels of diabetes damage nerves and blood vessels...


Neuropathy and blood vessel disease associated with diabetes can cause a variety of diabetic foot conditions, including ulcerations and infections. The nerves of the feet are the longest in the body and often are affected by neuropathy...


Diabetic kidney disease is one of the complications of diabetes. The function of healthy kidneys is to act as filters that keep the bloodstream clean. When kidneys are damaged by the high blood sugar levels of diabetes, waste and fluids build up in the blood, instead of being eliminated...


Diarrhea is defined either as watery stool, or increased frequency, or both, when compared to a normal amount. It is a common problem that may last a few days and disappear on its own...


Diffuse Lewy Body Disease, or Lewy Body Dementia, is a neurodegenerative disorder characterized by cognitive impairment. The patient’s alertness and attention may vary greatly from hour to hour and day to day, with degeneration of motor functionality similar to Parkinsonism...


Disc bulge, more commonly called a “bulging disc,” is a misalignment of the cushions (discs) between the vertebrae. This can happen for a number of reasons such as a normal part of aging, trauma, injury, or strain...


Discitis is a rare yet potentially serious infection which develops in 1-2% of patients following spinal surgery, and which occurs in one or more spaces between the vertebrae that usually act as a cushion (discs) between bones...


A dislocated shoulder is the most frequently occurring dislocation to any joint in the body. It is a painful injury that happens when a fall or accident causes the top of your upper arm bone (humerus) to pop out of your shoulder joint’s cup-shaped socket (glenoid ?" part of your shoulder blade), also known as a glenohumeral dislocation...


Distal muscular dystrophy (DD), or distal myopathy, is a group of degenerative disorders which weaken and deteriorate voluntary muscles in the extremities, particularly in the hands, feet, lower legs, and lower arms...


In the colon, some people have small pouches that bulge outward through weak spots. Diverticular disease is an inflammation or infection in the pouches, known as diverticula, which are located in the colon: A single pouch is called a diverticulum...


Diplopia, commonly referred to as double vision, is a condition that leads to the perception of two images of a single object seen next to each other or overlapping...


Double outlet right ventricle (DORV) is a complex congenital heart defect where the pulmonary artery and the aorta ?" the two great vessels ?" arise from the right ventricle...


Moyamoya syndrome is sometimes seen in association with other diseases, including Down syndrome. The appearance of Moyamoya syndrome can be diagnosed via diagnostic imaging tests...


Dubin-Johnson syndrome is a very rare genetic disorder in which a person has mild jaundice (yellowing of the skin and eyes) throughout their lifetime. This disorder, which is passed down through families, disturbs the body’s ability to remove bilirubin (a chemical produced by the liver) from the liver...


Dupuytren's contracture is a thickening of the tissue below the skin in the palm of the hand. As a result of this thickening, lumps can form beneath the skin, usually appearing at the base of the ring and pinkie fingers...


A dural arteriovenous fistula is a condition where an abnormal connection between the arteries and veins of the membrane surrounding the brain (the dura mater), causing gradual impairment...


Dysphagia, also known as impaired swallowing, is an altered ability to move food and/or liquid from the mouth to the stomach. Learn more at the New York Head and Neck Institute.


Dysphonia is a disorder of the voice. Any disorder that either immobilizes or prevents the vocal folds from vibrating against each other or alters their elasticity (ability to stretch) reduces the quality of the voice...


Dysplastic hips is a term used to describe a broad spectrum of abnormalities of the hip joint that can develop soon after birth or over time during childhood.


Dystonia is a chronic movement disorder which is either genetic or the result of changes or damage to the nervous system. Inaccurate signals from the brain cause repetitive, patterned, and at times painful, involuntary muscle contractions which may appear like a tremor...