G

Definition Gastroparesis means partial paralysis of the stomach. The word ‘gastro’ refers to the stomach, and the word ‘paresis’ means partial paralysis. To understand what goes wrong in gastroparesis, it is important to know how a healthy digestive tract functions. When we eat, we start by chewing and swallowing (ingesting), …

Gricelli Syndrome – Overview Gricelli syndrome is an inherited condition characterized by unusually light (hypopigmented) skin and light silvery-gray hair starting in infancy. Researchers have identified three types of this disorder, which are distinguished by their genetic cause and pattern of signs and symptoms. Griscelli syndrome type 1 involves severe …

Definition of Guillain Barre syndrome Guillain Barre syndrome (GBS) is a rare neurological disorder in which the body’s immune system mistakenly attacks part of its peripheral nervous system the network of nerves located outside of the brain and spinal cord. GBS can range from a very mild case with a …

Definition of Gigantism Gigantism is a rare condition that causes abnormal growth in children. This change is most notable in terms of height, but girth is affected as well. It occurs when your child’s pituitary gland makes too much growth hormone, which is also known as somatotropin. Early diagnosis is …

What is gangrene?   Gangrene, which refers to tissue death caused by a severe shortage of blood supply or serious bacterial infection, occurs in lower extremities. It is more common in the toes than other parts of the body. Gangrene tends to happen more often among people with peripheral artery …

Definition Gorham’s Disease, also known by the name of Disappearing Bone Disease, is an extremely uncommon medical condition of the skeletal system which does not have a specific etiology in which there is an uncontrolled proliferation of lymphatic channels within the bone causing resorption and replacement of bone fibrosis. Gorham’s …

Definition Galactosemia is a rare, hereditary disorder of carbohydrate metabolism that affects the body’s ability to convert galactose (a sugar contained in milk, including human mother’s milk) to glucose (a different type of sugar). The disorder is caused by a deficiency of an enzyme galactose-1-phosphate uridyl transferase (GALT) which is …

Definition A ganglion cyst is a soft-to-firm, round growth located on the wrist joint. Usually about 1-3 cm in diameter, it is nonmobile. It can be found most commonly on the dorsal aspect of the wrist but can occur on the volar side as well. This benign growth is tethered …