• Gallbladder cancer

• Gallbladder removal

• Gallstones

• Ganglion cyst

• Gangrene

• Gastrectomy

• Gastritis

• Gastroparesis

• Gastroscopy

• Gender dysphoria

• General anaesthesia

• Genetic and genomic testing

• Genital herpes

• Genital warts

• Gestational diabetes

• Giardiasis

• Gilbert's syndrome

• Glandular fever

• Glaucoma

• Glomerulonephritis

• Glue ear

• Glutaric aciduria type 1

• Goitre

• Gonorrhoea

• Gout

• Granuloma annulare

• Granulomatosis with polyangiitis

• Group B strep

• Growing pains

• Guillain-Barré syndrome

• Gum disease