Infectious dysbiosis refers to an imbalance in the body’s microbial communities—most often in the gut—triggered by the overgrowth of pathogenic organisms ...

Gut microbiome diseases are health conditions that happen when the tiny living creatures in your gut—bacteria, viruses, fungi, and other microbes—get out of ...

Granulomatosis with Polyangiitis (GPA), formerly known as Wegener’s Granulomatosis, is a rare autoimmune disease characterized by inflammation of small- to ...

Granular Corneal Dystrophy (GCD) is a rare, inherited eye condition in which small, breadcrumb-like deposits slowly build up in the middle layer (stroma) of ...

Gradenigo syndrome is a rare condition that happens when an infection in the middle ear (otitis media) spreads into the tip of the temporal bone called the ...

Gorlin–Goltz syndrome, also known as nevoid basal cell carcinoma syndrome, is a rare inherited condition that affects multiple parts of the body. It happens ...

Gorham–Stout disease (GSD), also called vanishing bone disease or phantom bone disease, is an extremely rare condition in which patches of bone slowly ...

Godtfredsen syndrome is a rare neurological condition characterized by the simultaneous impairment of the sixth cranial nerve (abducens nerve) and the twelfth ...

McArdle Disease (also called Glycogen Storage Disease Type V) is a rare inherited condition that affects how muscle cells use stored sugar (called glycogen) ...

Glycogen is your body’s “quick-use” sugar storage. Think of it like a rechargeable battery made of many glucose units. Your liver stores glycogen to keep blood ...

Posner–Schlossman Syndrome (PSS), also known as glaucomatocyclitic crisis, is a rare eye condition marked by sudden, temporary spikes in pressure inside one ...

Glaucomatocyclitic crisis, also called Posner–Schlossman syndrome (PSS), is a rare eye condition marked by sudden, short-lived rises in pressure inside one eye ...

Glaucoma is a group of eye conditions that damage the optic nerve, which carries visual signals from your eye to your brain. When this nerve is harmed, vision ...

Glaucoma refers to a group of eye conditions in which damage to the optic nerve leads to vision loss, often associated with high pressure inside the eye ...

Giant retinal tears (GRTs) are serious eye injuries that can lead to rapid vision loss if not recognized and treated promptly. In very simple English, a giant ...

Giant Fornix Syndrome (GFS) is a rare, long-lasting eye disease. In GFS, pus keeps coming from the eye because bacteria hide in a very deep fold (fornix) under ...

Giant cell arteritis is a serious condition in which the walls of medium- and large-sized arteries (the blood vessels carrying blood away from the heart) ...

Ghost cell glaucoma is a rare form of secondary open-angle glaucoma that happens when the fluid drainage system of the eye becomes blocked by small, rigid, ...

Gerstmann syndrome is a rare neurological condition first described in 1924 by Austrian neurologist Josef Gerstmann. It arises when a small region of the ...

Geographic atrophy (GA) is the advanced, late stage of the dry form of age-related macular degeneration (AMD). In GA, patches of light-sensing cells in the ...