Rabson-Mendenhall Syndrome is a rare disorder characterized by severe insulin resistance, developmental abnormalities, and hyperpigmentation of parts of the skin.
Radiation Proctitis is inflammation and damage to the lower parts of the colon after exposure to x-rays or other ionizing radiation as a part of radiation therapy.
Radioulnar Synostosis is the abnormal development of the radio-ulnar joint.
Rambam Hasharon Syndrome is a rare genetic disorder.
Ramsay Hunt Syndrome Type 2 results from nerve damage caused by shingles in the ear, causing facial paralysis and damage to the 7th cranial nerve causing severe headaches.
Rapid-Onset Obesity with Hypothalamic Dysfunction, Hypoventilation and Autonomic Dysregulation is a rare disorder that affects the governance of proper breathing.
Rasmussen's Encephalitis is a rare inflammatory neurological disorder which typically affects children under the age of 15 and is characterized by frequent and severe seizures, loss of motor skills...
Raynaud's Disease is a disorder characterized by some areas of the body, including fingers, toes, the nose, and ears to feel numb and cool in response to cold temperatures or stress.
Reactive Arthritis is an autoimmune condition due to an infection in another part of the body.
Pericarditis is a condition caused by the inflammation of the lining surrounding the heart.
Refractory Sprue is a rare autoimmune disorder similar to celiac disease but resistant or unresponsive to a gluten-free diet.
Refsum's Disease is a rare neurological disease resulting in the malformation of myelin sheaths around nerve cells.
Relapsing polychondritis is a rare disorder characterized by the deterioration of the cartilage.
Renal Cell Carcinoma, Subtype Chromophobe account for roughly 4% of all renal cell carcinomas, a type of kidney cancer.
Rendu-Osler-Weber Disease is a rare genetic disorder that leads to abnormal blood vessel formation in the skin, mucous membranes, and organs.
Renpenning's Syndrome is a rare developmental disorder characterized by a regression in mental and physical development in early childhood.
Restrictive Cardiomyopathy is a rare form of cardiomyopathy.
Retinitis Pigmentosa is a group of genetic eye disorders in which abnormalities of the photoreceptors or the retinal pigment epithelium of the retina lead to progressive retinal dystrophy.
Retinoblastoma is a rare form of cancer which develops in the cells of the retina.
Retroperitoneal Fibrosis is an ideopathic auto-immune disorder that causes scar tissue to form in the the abdomen and wrap itself around the abdominal aorta. It can grow in thickness and length, an...
Rett syndrome is a unique developmental disorder that is first recognized in infancy and seen almost always in girls, but can be rarely seen in boys. Rett syndrome has been most often misdiagnosed ...
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Rheumatoid Factor-Positive Polyarthritis is a rare juvenile idiopathic arthritis.
Rheumatoid Purpurais a rare form of vasculitis that affects mostly the skin, kidneys, joints and stomach.
Rhizomelic Chondrodysplasia Punctata is a rare disorder characterized by dwarfism due to shortening of the proximal bones.
Rickets is a softening of the bones in children potentially leading to fractures and deformity.
Rocky Mountain Spotted Fever is caused by a bacterium spread through ticks.
Rubinstein-Taybi Syndrome is a rare disorder characterized by short stature, learning difficulties distinctive facial features, and broad thumbs and first toes.