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All Communities

  • Dandy-Walker Syndrome

    10 members

    Dandy-Walker Syndrome is a rare congenital brain malformation.

  • Danon Disease

    3 members

    What is Danon Disease?

    Danon Disease (DD) is a rare, genetically inherited disease that primarily affects the heart, but can involve other organ sy...

  • Darier's Disease

    55 members

    Darier disease, also known as keratosis follicularis, is a rare genetic disorder of the skin. It is characterized by skin lesions that consist of thickened, scaly bumps which can be yellow or br...

  • Degos Disease

    3 members

    Degos Disease is a rare disorder that affects the lining of the veins and arteries.



  • Delta-Sarcoglycanopathy

    1 members

  • Dent's Disease

    77 members

    Dent disease is a rare X-linked recessive, chronic kidney condition found almost exclusively in males. The severity of the disease and the specific symptoms can vary. Females, who can be carrier...

  • Dentatorubral Pallidoluysian Atrophy

    4 members

    Dentatorubral Pallidoluysian Atrophy is a rare disorder characterized by spinocerebellar degeneration.

  • Dercums disease

    1 members

    Growths of fatty tissue (lipomas) may appear all over body, the lumps push on nearby nerves and can cause weakness, severe pain, burning, electric shock sensation, parethesia, aching, numbness, ...

  • Dermatitis Herpetiformis

    4 members

    Dermatitis Herpetiformis is a rare chronic blistering skin condition.

  • Dermatofibrosarcoma Protuberans

    6 members

    Dermatofibrosarcoma Protuberans is a rare type of malignant tumor.

  • Dermatomyositis

    48 members

    Dermatomyositis (DM) is a rare autoimmune connective tissue disorder related to polymyositis. An inflammatory myopathy disease; myopathy is a condition that affects the muscles.  It is char...

  • Desmin Related Myopathy

    5 members

    Desmin Related Myopathy is a disorder characterized by mutation in the gene for desmin which prevents it from forming protein filaments.

  • Diabetes mellitus type 1

    10 members

    Diabetes mellitus type 1 is an autoimmune disease characterized by the permanent destruction of insulin-producing beta cells of the pancreas.

  • Diamond Blackfan Anemia

    3 members

    Diamond Blackfan Anemia is a rare blood condition where bone marrow produces little or no red blood cells.

  • Diastrophic Dwarfism

    2 members

    Diastrophic Dysplasia is a congenial disorder which affects cartilage and bone development.

  • Diffuse Ideopathic Skeletal Hyperostosis

    5 members

    Diffuse ideopathic skeletal hyperostosis is a form of degenerative arthritis characterized by excessive bone growth along the sides of the vertebrae of the spine.

  • Diffuse Palmoplantar Keratoderma

    5 members

    Diffuse Palmoplantar Keratoderma is characterized by an even, thick, symmetric hyperkeratosis over the whole of the palm and sole.

  • Diploid Triploid Mosaicism

    7 members

    Diploid Triploid Mosaicism is a rare chromosomal disorder in which additional chromosomes are found in a portion of cells.

  • Distal Myopathy

    3 members

    Distal Myopathy is a group of rare, slowly progressive, muscle disorders that primarily affect muscles in the lower arms, hands, lower legs and feet.

  • Distal Trisomy 10q


    Distal Trisomy 10q is a rare disorder caused by an extra portion of the long arm on chromosome 10.

  • Donohue Syndrome

    1 members

    Donohue Syndrome is a rare genetic disorder caused by an impaired insulin receptor.

  • Dopa-Responsive Dystonia

    5 members

    Dopamine-Responsive Dystonia is a genetic movement disorder.

  • Double Cortex Syndrome

    41 members

    Double Cortex Syndrome is a rare brain disorder that can cause mental retardation, learning disabilities, cognative disabilities and epilepsy due to an extra layer of nerves developed under the ...

  • Down Syndrome

    8 members

    Down syndrome is a disorder originating from an additional 21st chromosome.

  • Dravet Syndrome

    17 members

    Dravet Syndrome is a rare epileptic encephalopathy classified in 1989 by the International League Against Epilepsy (ILAE) as a "syndrome undetermined as to whether seizures are focal or generalized...

  • Duane Syndrome

    4 members

    Duane Syndrome is a rare eye movement disorder.

  • Duodenal Cancer

    1 members

    Duodenal Cancer is a rare cancer in the beginning section of the small intestine located between the stomach and the jejunum.

  • Dupuytren's Contracture

    3 members

    Dupuytren's Contracture is a rare condition in which the fingers bend towards the palm and cannot be fully straightened.

  • Dyskeratosis Congenita

    3 members

    Dyskeratosis congenita is a rare congenital disorder resulting in premature aging.