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All Communities

  • Rabson-Mendenhall Syndrome

    1 members

    Rabson-Mendenhall Syndrome is a rare disorder characterized by severe insulin resistance, developmental abnormalities, and hyperpigmentation of parts of the skin.

  • Radiation Proctitis

    1 members

    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

    10 members

    Radioulnar Synostosis is the abnormal development of the radio-ulnar joint.

  • Rambam Hasharon Syndrome


    Rambam Hasharon Syndrome is a rare genetic disorder.

  • Ramsay Hunt Syndrome Type 2

    2 members

    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

    12 members

    Rapid-Onset Obesity with Hypothalamic Dysfunction, Hypoventilation and Autonomic Dysregulation is a rare disorder that affects the governance of proper breathing.

  • Rasmussen's Encephalitis

    2 members

    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

    26 members

  • Reactive Arthritis

    4 members

    Reactive Arthritis is an autoimmune condition due to an infection in another part of the body.

  • Recurrent Pericarditis

    3 members

    Pericarditis is a condition caused by the inflammation of the lining surrounding the heart.

  • Refractory Sprue

    1 members

    Refractory Sprue is a rare autoimmune disorder similar to celiac disease but resistant or unresponsive to a gluten-free diet.

  • Refsum's Disease

    1 members

    Refsum's Disease is a rare neurological disease resulting in the malformation of myelin sheaths around nerve cells.

  • Relapsing Polychondritis

    21 members

    Relapsing Polychondirtis (RP) is a rare and degenerative disease in which  the body’s cartilage undergoes recurrent inflammation. The body’s cartilage is a firm tissue found all...

  • Renal Cell Carcinoma, Subtype Chromophobe

    2 members

    Renal Cell Carcinoma, Subtype Chromophobe account for roughly 4% of all renal cell carcinomas, a type of kidney cancer.

  • Rendu-Osler-Weber Disease

    3 members

    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

    3 members

    Renpenning's Syndrome is a rare developmental disorder characterized by a regression in mental and physical development in early childhood.

  • Restrictive Cardiomyopathy

    3 members

    The heart is the organ that pumps blood to the body. Structurally, it is made up of four chambers: the right atrium, the right ventricle, the left atrium, and the left ventricle. The l...

  • Retinitis Pigmentosa

    8 members

    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


    Retinoblastoma is a rare form of cancer which develops in the cells of the retina.

  • Retroperitoneal Fibrosis

    9 members

    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

    7 members

    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 ...

  • RGI Demo Community

    1 members

    RGI Demo Community



    Here is where we edit the community

  • Rheumatic fever

    3 members

  • Rheumatoid Factor-Negative Polyarthritis

    5 members

  • Rheumatoid Factor-Positive Polyarthritis

    7 members

    Rheumatoid Factor-Positive Polyarthritis is a rare juvenile idiopathic arthritis.

  • Rheumatoid Purpura

    3 members

    Rheumatoid Purpurais a rare form of vasculitis that affects mostly the skin, kidneys, joints and stomach.

  • Rhizomelic Chondrodysplasia Punctata


    Rhizomelic Chondrodysplasia Punctata is a rare disorder characterized by dwarfism due to shortening of the proximal bones.

  • Rickets

    3 members

    Rickets is a softening of the bones in children potentially leading to fractures and deformity.

  • Rocky Mountain Spotted Fever

    3 members

    Rocky Mountain Spotted Fever is caused by a bacterium spread through ticks.

  • Rubinstein-Taybi Syndrome

    10 members

    Rubinstein-Taybi Syndrome is a rare disorder characterized by short stature, learning difficulties distinctive facial features, and broad thumbs and first toes.