Conditions

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Gait disorders are abnormalities in walking, typically caused by musculoskeletal and neurological conditions. They can include conditions related to Parkinson’s disease, muscular sclerosis, cerebral palsy, and others such as nerve disease, spinal cord trauma, muscular disease, arthritis, and/or foot problems...


The gallbladder is an organ that stores the bile made in the liver and sends it into the small intestine to help digest fat. Gallbladder cancer is uncommon, but often curable if diagnosed in its early stages.


Gallstones form when bile stored in the gallbladder hardens into stone-like material. Too much cholesterol, bile salts, or bilirubin (bile pigment) can cause gallstones...


Ganglioneuromas are rare benign (non-cancerous) tumors that occur on the nerve fibers of the autonomic nervous system, which controls unconscious functions such as breathing, circulation, and respiration...


Gangrene is a medical term used to describe the death of an area of the body. It develops when the blood supply is cut off to the affected part as a result of various causes...


Learn more about what causes gangrene, symptoms and world-class treatments available at Northwell Health.


Gastritis is an inflammation of the stomach lining. While the lining of the stomach is quite strong and can withstand strong acid, drinking too much alcohol, eating spicy foods, or smoking can cause the lining to become inflamed and irritated...


Gastroesophageal reflux disease (GERD) is a digestive disorder that is caused by gastric acid flowing from the stomach into the esophagus. Gastroesophageal refers to the stomach and esophagus, and reflux means to flow back or return...


Gastroesophageal refers to the stomach and esophagus, and reflux means to flow back or return. Gastroesophageal reflux (GER) is the return of acidic stomach juices, or food and fluids, back up into the esophagus.


Gastrointestinal stromal tumors (GISTs) are rare tumors of the GI tract. They start in special cells called the interstitial cells of Cajal (ICCs). ICCs are part of the autonomic nervous system and coordinate the automatic movements of the GI tract...


Hypothalamic Hamartoma (HH) is a malformation in the brain. It is usually diagnosed at birth or in childhood. One of the effects of HH may be Gelastic or “laughing” seizures...


Generalized seizures, may be primary or secondarily generalized seizures. A primary generalized seizure is when abnormal electrical activity is widespread, rapidly affecting both sides of the brain at once...


There are several genetic endocrine disorders that can lead to a greater risk of cancer of the endocrine system, including carcinoids (malignant tumors that develop in hormone producing cells of the adrenal glands)...


Genital herpes is a common sexually transmitted disease (STD) caused by two viruses: herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2)...


Gestational diabetes is glucose intolerance, or high blood sugar, that is first recognized during pregnancy in a woman who was not previously diagnosed with diabetes...


Gestational diabetes is a condition characterized by hyperglycemia (high blood sugar) and insulin resistance that is first recognized during pregnancy.


Learn about gestational hypertension, a condition associated with high blood pressure during pregnancy, and the leading treatment options at Northwell.


Moyamoya syndrome is sometimes seen in association with other conditions, including giant craniofacial hemangiomas. Patients with giant craniofacial hemangiomas can have with symptoms of Moyamoya syndrome, resulting in complications such as stroke, transient neurologic deficit and seizure...


Giardiasis is an infectious diarrheal disease caused by the parasite Giardia intestinalis (also known as Giardia lamblia or Giardia duodenalis). This parasite can be transmitted through oral-fecal contact and by water contaminated by feces...


Gilbert’s disease impacts the way bilirubin, a substance with a yellowish pigment made by the liver, is processed. When bilirubin is not processed properly, it causes jaundice (a yellowing of the skin and eyes)...


A glioblastoma multiforme (GBM) is a cancerous tumor that arises from the star-shaped cells (astrocytes) that make up the “glue-like” or supportive tissue of the brain...


The term glioma is used to describe any tumor that arises from the brain’s supportive tissue. This tissue, called “glia,” helps to keep the neurons functioning well and in place...


Glomerular disease refers to various diseases including, glomerulosclerosis and chronic and acute glomerulonephritis. Kidneys are made up of millions of nephrons that filter and remove fluid and waste from the kidneys and turn it into urine...


A glomus jugulare tumor involves the middle and inner ear structures, which are part of the temporal bone in the skull. Glomus jugulare tumors can affect the upper neck, ear, base of the skull, and the surrounding blood vessels and nerves...


Glossopharyngeal neuralgia (GN) is a pain syndrome that causes sharp, stabbing pain in the back of the throat, tongue, tonsils and middle ear. The pain can last from a few seconds to a few minutes...


Goiters are benign (non-cancerous) thyroid tumors/nodules, cysts and massive enlargement of the gland that can cause trouble breathing or swallowing. Learn more at the New York Head and Neck Institute.


Golfer’s elbow, known medically as medial epicondylitis, is inflammation of the tendons (tough cords of tissue) that attach your forearm muscles to the inside of the bone at your elbow...


Goodpasture syndrome is a rare, autoimmune disease that can affect the lungs and kidneys. Normally, the immune system creates antibodies to fight off germs...


Gout is characterized by inflamed, painful joints due to the formation of crystal deposits at the joints. Also known as "the disease of kings and the king of diseases," gout affects more men than women and is often associated with obesity, hypertension (high blood pressure), hyperlipidemia (high levels of lipids in the blood), and diabetes...


Graves' disease is a type of hyperthyroidism (an overactive thyroid gland) and is considered a disorder of the immune system (autoimmune disease). Patients will develop a very high heart rate and protruding/prominent eyes, may become mentally ill and (if untreated) die from heart failure...


Growth plates are areas of cartilage within the bone that allow a child’s bone to grow in length and width. The growth plate is weaker than the rest of the bone, and thus is a frequent area of injury...


Gynecological infections and inflammations can be complicated and polymicrobial in nature. The most common inflammations are vulvitis, vaginitis and cervicitis.