This is a list of diseases starting with the letter "G".
DiseasesAlphabetical list
Ga
Gal–Gap
- Galactorrhea
- Galactocoele
- Galactokinase deficiency
- Galactorrhea hyperprolactinemia
- Galactosamine-6-sulfatase deficiency
- Galactose-1-phosphate uridylyltransferase deficiency
- Galactosemia
- Galloway Mowat syndrome
- Gamborg–Nielsen syndrome
- Game–Friedman–Paradice syndrome
- Gamma aminobutyric acid transaminase deficiency
- Gamma-cystathionase deficiency
- Gamma-sarcoglycanopathy
- Gamstorp episodic adynamy
- Ganglioglioma
- Gangliosidosis
- Ganser syndrome
- GAPO syndrome
- Garchichiliosis
Gar–Gau
- Garcia–Torres–Guarner syndrome
- Gardner–Morrisson–Abbot syndrome
- Gardner–Silengo–Wachtel syndrome
- Gardner–Diamond syndrome
- Gardner's syndrome
- Garret–Tripp syndrome
- Gas/bloat syndrome
- Gastric dumping syndrome
- Gastric lymphoma
- Gastritis, familial giant hypertrophic
- Gastrocutaneous syndrome
- Gastroenteritis, eosinophilic
- Gastro-enteropancreatic neuroendocrine tumor
- Gastroenteritis
- Gastroesophageal reflux
- Gastrointestinal autonomic nerve tumor
- Gastrointestinal neoplasm
- Gaucher disease
Gay
Ge
Gee–Gem
- Geen Sandford Davison syndrome
- Gelatinous ascites
- Geleophysic dwarfism
- Gelineau disease
- Geliphobia
- Gemignani syndrome
- Gemss syndrome
Gen–Ger
- Gender dysphoria
- Genée-Wiedemann syndrome
- Generalized anxiety disorder (GAD)
- Generalized malformations in neuronal migration
- Generalized resistance to thyroid hormone
- Generalized seizure
- Generalized torsion dystonia
- Genes syndrome
- Genetic diseases, inborn
- Genetic reflex epilepsy
- Genetic susceptibility to infections caused by BCG
- Genital anomaly cardiomyopathy
- Genital dwarfism, Turner type
- Genital dwarfism
- Genital retraction syndrome (also known as koro)
- Genito palatocardiac syndrome
- Genu valgum, st. Helena familial
- Genu varum
- Genuphobia
- Geographic tongue
- German syndrome
- Germinal cell aplasia
- Gerodermia osteodysplastica
- Gershinibaruch–Leibo syndrome
- Gerstmann syndrome
Ges
Gh
Gi
- Gianotti-Crosti syndrome
- Giant axonal neuropathy
- Giant cell arteritis
- Giant cell myocarditis
- Giant congenital nevi
- Giant ganglionic hyperplasia
- Giant hypertrophic gastritis
- Giant mammary hamartoma
- Giant papillary conjunctivitis
- Giant pigmented hairy nevus
- Giant platelet syndrome
- Giardiasis
- Gibson's Syndrome
- Giedion syndrome
- Gigantism advanced bone age hoarse cry
- Gigantism partial, nevi, hemihypertrophy, macrocephaly
- Gigantism
- Gilbert's syndrome
- Gilles de la Tourette's syndrome
- Gingival fibromatosis dominant
- Gingival fibromatosis facial dysmorphism
- Gingival fibrosis
- Gingivitis
- Gyrate atrophy of the choroid and retina
- Gitelman syndrome
- Gittings syndrome
Gl
Gla–Gli
- Glanzmann thrombasthenia
- Glass–Chapman–Hockley syndrome
- Glaucoma
- Glaucoma ecopia microspherophakia stiff joints short stature
- Glaucoma iridogoniodysgenesia
- Glaucoma sleep apnea
- Glaucoma type 1C
- Glaucoma, congenital
- Glaucoma, hereditary adult type 1A
- Glaucoma, hereditary juvenile type 1B
- Glaucoma, hereditary
- Glaucoma, primary infantile type 3A
- Glaucoma, primary infantile type 3B
- Glioblastoma
- Glioma
- Gliosarcoma
Glo
- Globel disaccharide intolerance
- Glomerulonephritis sparse hair telangiectases
- Glomerulonephritis
- Glomerulosclerosis
- Gloomy face syndrome
- Glossodynia
- Glossopalatine ankylosis micrognathia ear anomalies
- Glossopharyngeal neuralgia
- Glossophobia
Glu
- Glucagonoma
- Glucocorticoid deficiency, familial
- Glucocorticoid resistance
- Glucocorticoid sensitive hypertension
- Glucose 6 phosphate dehydrogenase deficiency
- Glucose-6-phosphate translocase deficiency
- Glucose-galactose malabsorption
- Glucosephosphate isomerase deficiency
- Glucosidase acid-1,4-alpha deficiency
- Glut2 deficiency
- Glutamate decarboxylase deficiency
- Glutamate-aspartate transport defect
- Glutaricaciduria I
- Glutaricaciduria II
- Glutaryl-CoA dehydrogenase deficiency
- Glutathione synthetase deficiency
Gly
- Glyceraldehyde-3-phosphate dehydrogenase deficiency
- Glycine synthase deficiency
- Glycogen storage disease
- Glycogen storage disease type 1B
- Glycogen storage disease type 1C
- Glycogen storage disease type 1D
- Glycogen storage disease type 6, due to phosphorylation
- Glycogen storage disease type 7
- Glycogen storage disease type 9
- Glycogen storage disease type II
- Glycogen storage disease type V
- Glycogen storage disease type VI
- Glycogen storage disease type VII
- Glycogen storage disease type VIII
Gm
Go
Goi–Gon
- Goitre
- Goldberg–Bull syndrome
- Goldberg syndrome
- Goldblatt–Wallis syndrome
- Goldblatt–Wallis–Zieff syndrome
- Goldblatt–Viljoen syndrome
- Goldenhar syndrome
- Goldskag–Cooks–Hertz syndrome
- Goldstein–Hutt syndrome
- Gollop–Coates syndrome
- Gollop syndrome
- Goltz syndrome
- Gombo syndrome
- Gomez and López-Hernández syndrome
- Gonadal dysgenesis
Goo–Gou
- Goodman camptodactyly
- Goodpasture pneumorenal syndrome
- Goodpasture's syndrome
- Gordon hyperkaliemia-hypertension syndrome
- Gordon syndrome
- Gorham syndrome
- Gorham's disease
- Gorham–Stout disease
- Gorlin–Bushkell–Jensen syndrome
- Gorlin–Chaudhry–Moss syndrome
- Gottron's syndrome
- Gougerot–Blum syndrome
- Gougerot–Sjogren syndrome
- Gout
- Gouty nephropathy, familial
Gr
Gra–Gri
- Graft versus host disease
- Graham–Boyle–Troxell syndrome
- Grand–Kaine–Fulling syndrome
- Grant syndrome
- Granulocytopenia
- Granuloma annulare
- Granulomas, congenital cerebral
- Granulomatosis, lymphomatoid
- Granulomatous allergic angiitis
- Granulomatous hypophysitis
- Granulomatous rosacea
- Graphite pneumoconiosis
- Graves' disease
- Gray platelet syndrome
- Great vessels transposition
- Greenberg dysplasia
- Greig cephalopolysyndactyly syndrome GCPS
- Griscelli disease
- Grix–Blankenship–Peterson syndrome
Gro–Gru
- Groll–Hirschowitz syndrome
- Grosse syndrome
- Grover's disease
- Growth deficiency brachydactyly unusual facies
- Growth delay, constitutional
- Growth hormone deficiency
- Growth mental deficiency syndrome of Myhre
- Growth retardation alopecia pseudoanodontia optic
- Growth retardation hydrocephaly lung hypoplasia
- Growth retardation mental retardation phalangeal hypoplasia
- Grubben–Decock–Borghgraef syndrome
Gt–Gy
- GTP cyclohydrolase deficiency
- Guanidinoacetate methyltransferase deficiency
- Guérin–Stern syndrome
- Guibaud–Vainsel syndrome
- Guillain–Barré syndrome
- Guizar–Vasquez–Luengas syndrome
- Guizar–Vasquez–Sanchez–Manzano syndrome
- Gunal–Seber–Basaran syndrome
- Gupta–Patton syndrome
- Gurrieri–Sammito–Bellussi syndrome
- Gusher syndrome
- Gymnophobia
- Gynecomastia
- Gyrate atrophy of the retina
- Gyrate atrophy