Galactokinase deficiency
Galactosylceramidase deficiency
Ganglioneuroblastoma
Ganglioneuroma
Gangrene
Gartners duct cyst
Gastric ulcer
Gastrinoma
Gastritis
Gastritis - Helicobacter pylori
Gastroenteritis - viral
Gastroesophageal reflux disease
Gastrointestinal perforation
Gastroschisis
Gaucher disease
Gender identity disorder
General paresis
Generalized tonic-clonic seizure
Genital herpes
Genu valgum
German measles
Gestational diabetes
Giantism
Giardia
Gilles de la Tourette syndrome
Gingivitis
Gingivostomatitis
Glanzmanns disease
Glioma - optic
Glomerulonephritis
Glomerulonephritis - membranoproliferative (type I)
Glomerulonephritis - post-streptococcal
Glomus jugulare tumor
Glomus tympanum tumor
Glossitis
Glucagonoma
Glue ear
Glycogen storage disease type V
Goiter
Gonadal deficiency
Gonadotropin deficiency
Gonococcal bacteremia
Gonococcal pharyngitis
Graft rejection
Graft-versus-host disease
Gram-negative meningitis
Granuloma annulare
Granulomatous arthritis
Group B streptococcal septicemia of the newborn
Gumma
Guttate psoriasis