All Diseases that Start with G (Rare, Deadly, and Many More!)

Dive into the world of health and medicine with our comprehensive guide to diseases that start with ‘G’. From conditions affecting the blood, bones, eyes, and mental health to those impacting the lungs, skin, and even our beloved pets, dogs, and cats, this guide covers it all.

We will explore a range of diseases, including deadly, rare, autoimmune diseases, and bacterial infections. Get ready for an insightful journey through the alphabet of ailments.

Top 100 Diseases that Start with G

Below are the top 100 diseases starting with the letter ‘G’.

• Gastritis: Inflammation of the stomach lining.
• Glaucoma: Eye condition leading to vision loss.
• Gout: Painful joint inflammation.
• Gingivitis: Gum inflammation.
• Gastroenteritis: Infection causing vomiting and diarrhea.
• Gallstones: Hard particles in the gallbladder.
• Gonorrhea: Sexually transmitted bacterial infection.
• Glioblastoma: Aggressive brain tumor.
• Gastric Ulcer: Sore on the stomach lining.
• Genital Herpes: Viral infection affecting genitals.
• Gastroparesis: Delayed stomach emptying.
• Granuloma Annulare: Ring-shaped skin lesions.
• Graves’ Disease: Overactive thyroid.
• Gastroesophageal Reflux Disease (GERD): Acid reflux.
• Guillain-Barré Syndrome: The immune system attacks nerves.
• Glandular Fever (Mononucleosis): Viral infection causing fatigue.
• Gastric Cancer: Cancer of the stomach.
• Geographic Tongue: Map-like patches on the tongue.
• Glioma: Type of brain tumor.
• Granulomatosis with Polyangiitis: Blood vessel inflammation.
• Gynecomastia: Enlarged male breast tissue.
• Gastrointestinal Bleeding: Bleeding in the digestive tract.
• Genital Warts: HPV infection causing warts.
• Glomerulonephritis: Kidney inflammation.
• Gastrointestinal Stromal Tumor (GIST): Stomach and intestinal tumor.
• Galactorrhea: Abnormal breast milk production.
• Gigantism: Abnormal growth due to hormone imbalance.
• Gouty Arthritis: Joint inflammation from uric acid.
• Granulocytic Sarcoma: Tumor of myeloid cells.
• Gastroschisis: Birth defect of the abdominal wall.
• Gastric Lymphoma: Stomach lymphatic tissue cancer.
• Generalized Anxiety Disorder: Chronic anxiety.
• Gastrointestinal Perforation: Hole in the stomach or intestines.
• Gardner Syndrome: Genetic disorder leading to tumors.
• Gastrinoma: Tumor that produces excess gastrin.
• Genetic Disorders: Disorders caused by genetic abnormalities.
• Geotrichosis: Fungal infection.
• German Measles (Rubella): Contagious viral infection.
• Gerstmann Syndrome: Neurological disorder.
• Gingival Hyperplasia: Overgrowth of gum tissue.
• Glanzmann’s Thrombasthenia: Bleeding disorder.
• Glaucoma, Acute Angle-Closure: Sudden increase in eye pressure.
• Glomerulosclerosis: Scarring of the kidneys’ tiny filters.
• Glossitis: Inflammation of the tongue.
• Glossopharyngeal Neuralgia: Throat and ear pain.
• Glucose-6-Phosphate Dehydrogenase Deficiency: Red blood cell disorder.
• Glue Ear: Fluid buildup in the middle ear.
• Glycogen Storage Diseases: Metabolic disorders affecting glycogen storage.
• Goiter: Enlarged thyroid.
• Golfer’s Elbow: Tendinitis in the elbow.
• Gonadal Dysgenesis: Abnormal gonad development.
• Goodpasture Syndrome: Lung and kidney disease.
• Granular Cell Tumor: Benign or malignant tumor.
• Granulomatous Cheilitis: Chronic lip swelling.
• Graves’ Ophthalmopathy: Eye problems related to thyroid disease.
• Greenstick Fractures: Bone cracks on one side.
• Grover’s Disease: Itchy skin condition.
• Growth Hormone Deficiency: Lack of growth hormone.
• Gulf War Syndrome: Illnesses in Gulf War veterans.
• Gum Disease: Diseases affecting the gums.
• Gynandromorphism: Presence of both male and female characteristics.
• Gynecological Cancers: Cancers of the female reproductive system.
• Gynophobia: Fear of women.
• Gyrate Atrophy: Progressive vision loss.
• Gallbladder Cancer: Cancer in the gallbladder.
• Gallbladder Disease: Various diseases of the gallbladder.
• Ganglion Cysts: Fluid-filled lumps near joints.
• Gangrene: Tissue death due to lack of blood flow.
• Gas Gangrene: Deadly bacterial infection in tissues.
• Gastric Volvulus: Stomach twisting on itself.
• Gastrocolic Fistula: Abnormal connection between stomach and colon.
• Gastroenteropancreatic Neuroendocrine Tumor: Rare tumors affecting the GI tract and pancreas.
• Gastropathy: Any disease of the stomach.
• Gaucher’s Disease: Genetic disorder affecting cell metabolism.
• Gender Dysphoria: Psychological distress due to gender identity.
• Gene Mutation Disorders: Diseases caused by genetic mutations.
• Generalized Epilepsy: Seizures affecting the whole brain.
• Genital Lymphedema: Swelling of genitals due to lymphatic issues.
• Genitourinary Prolapse: Prolapse of urinary and genital organs.
• Geographic Atrophy: Advanced age-related macular degeneration.
• Geriatric Depression: Depression in older adults.
• Germ Cell Tumors: Tumors from reproductive cells.
• Gestational Diabetes: Diabetes during pregnancy.
• Gestational Hypertension: High blood pressure during pregnancy.
• Gestational Trophoblastic Disease: Tumors from placental tissue.
• Giant Cell Arteritis: Inflammation of blood vessels.
• Giant Cell Tumor of Bone: Bone tumor.
• Giant Congenital Nevus: Large birthmark.
• Giant Papillary Conjunctivitis: Inflammation under eyelids.
• Gibbus Deformity: Hump-like curvature of the spine.
• Gilbert’s Syndrome: Benign liver condition.
• Gingival Fibromatosis: Excessive gum tissue growth.
• Glanzmann Thrombasthenia: Blood clotting disorder.
• Glassy Cell Carcinoma: Rare form of cervical cancer.
• Glaucoma, Congenital: Glaucoma in infants.
• Glaucoma, Secondary: Glaucoma due to another disease.
• Glossodynia: Painful tongue.
• Glossopharyngeal Tumor: Tumor in throat and mouth area.
• Glucagonoma: Tumor in the pancreas producing glucagon.
• Glutaric Acidemia: Metabolic disorder affecting amino acids.

Also, Check:

Medical Terms That Start With G

Fitness Words That Start With G

Rare Diseases That Start With G

• Gaucher’s Disease
• Gerstmann Syndrome
• Giant Axonal Neuropathy
• Giant Cell Arteritis
• Glanzmann Thrombasthenia
• Glaucoma, Congenital
• Glomuvenous Malformations
• Glycogen Storage Disease Type II (Pompe Disease)
• Goodpasture Syndrome
• Gorham’s Disease
• Granulomatosis with Polyangiitis
• Griscelli Syndrome
• Guillain-Barré Syndrome
• Gunther’s Disease
• Gusher Syndrome

Deadly Diseases That Start With G

• Gastric Cancer
• Gastrointestinal Stromal Tumor (GIST)
• Gastrointestinal Bleeding
• Gastroesophageal Reflux Disease (GERD) – severe complications
• Genital Herpes – with severe complications
• German Measles (Rubella) – during pregnancy
• Gestational Trophoblastic Disease
• Giant Cell Arteritis
• Glioblastoma
• Glomerulonephritis
• Goodpasture Syndrome
• Granulomatosis with Polyangiitis
• Group B Streptococcal Infection
• Guillain-Barré Syndrome
• Gum Disease – with severe complications

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