Conditions
Hepatocellular Carcinoma
Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer, meaning it starts in the liver itself. It typically develops in people…
Heat-Related Illness
Heat-related illness happens when your body gets too hot and cannot cool itself down effectively. It covers a range of conditions, from mild muscle…
Hantavirus Pulmonary Syndrome
Hantavirus Pulmonary Syndrome (HPS) is a rare but severe lung disease caused by hantaviruses, which are spread by rodents. People usually get HPS by…
HER2-Positive Breast Cancer
HER2-positive breast cancer is a type of breast cancer where the cancer cells have too much of a protein called human epidermal growth factor…
HER2-Negative Breast Cancer
HER2-negative breast cancer means the cancer cells do not have high levels of a protein called human epidermal growth factor receptor 2 (HER2). This…
Granulomatosis with Polyangiitis
Granulomatosis with Polyangiitis (GPA) is a rare autoimmune disease where your immune system mistakenly attacks your own blood vessels. This causes inflammation (vasculitis) in…
Granuloma Annulare
Granuloma annulare is a common, usually harmless skin condition that causes small, firm bumps to form in ring-shaped patterns. These rashes often appear on…
Graft vs. Host Disease
Graft-versus-host disease (GVHD) is a serious complication that can happen after a stem cell or bone marrow transplant. It occurs when the donated immune…
Glossopharyngeal Neuralgia
Glossopharyngeal neuralgia is a rare condition that causes sudden, severe, and often stabbing pain in the throat, ear, tonsil area, or tongue. This pain…
Glomerulonephritis
Glomerulonephritis is a kidney disease where the tiny filters in your kidneys, called glomeruli, become inflamed and damaged. These filters are essential for cleaning…
Glioma
Glioma is a common type of brain tumor that starts in glial cells, which support nerve cells in the brain and spinal cord. These…
Generalized Anxiety Disorder
Generalized Anxiety Disorder (GAD) is a condition marked by excessive, persistent, and unrealistic worry about everyday things, even when there's little reason for concern.…
Gastroschisis
Gastroschisis is a birth defect where a baby's intestines (bowel) are found outside of their body. This happens through a hole in the abdominal…
Garlic Allergy
A garlic allergy is an immune system reaction to proteins found in garlic, mistakenly identifying them as harmful. This can cause various symptoms, from…
Gallbladder Polyps
Gallbladder polyps are abnormal growths on the inner lining of your gallbladder, a small organ that stores bile. Most of these polyps are harmless…
Galactosemia
Galactosemia is a rare, inherited metabolic disorder present from birth where the body cannot properly break down a sugar called galactose. This sugar is…
G6PD Deficiency
G6PD deficiency is a genetic condition where your red blood cells lack enough of an enzyme called glucose-6-phosphate dehydrogenase (G6PD). This enzyme protects red…
Frey’s Syndrome
Frey's syndrome is a rare neurological condition that causes sweating and redness on one side of your face, usually near your ear and cheek,…
Focal Dystonia
Focal dystonia is a neurological condition causing involuntary, sustained muscle contractions in a specific body part. These contractions lead to repetitive twisting movements or…
Fistula
A fistula is an abnormal tunnel or connection that forms between two organs or vessels that do not usually connect, or between an organ…
Felty Syndrome
Felty Syndrome is a rare but serious complication that can affect some people living with long-standing rheumatoid arthritis (RA). It involves three main features:…
Fat Necrosis
Fat necrosis is a benign (non-cancerous) condition where fat cells die and break down, often forming a firm lump under the skin. It commonly…
Fanconi Syndrome
Fanconi Syndrome is a rare kidney disorder where the kidney's filtering units, called tubules, fail to reabsorb essential nutrients and minerals back into the…
Familial Adenomatous Polyposis
Familial Adenomatous Polyposis (FAP) is a rare, inherited condition causing hundreds to thousands of noncancerous growths called polyps in the large intestine (colon) and…