Top 10 Rare Diseases and Rare Disorders You Do Not know about

rare disorders
We'll look at the top 10 rare diseases and rare disorders, some of which you may never have heard of and rare diseases others which you hope you never will again.
Top 10 Rarest Diseases in the World...rare diseases is the infrequency of their occurrence in the human population. Often rare diseases lifelong disease or disorder condition with a prevalence of 1 or less, per 1000 population is defined rare diseases by the World Health Organization (WHO) as a rare disease
A rare disease, also referred to as an rare disorders, is any disease that affects a small percentage of the population.
A disease or disorder is defined as rare in US when it affects less than 1 in 2000. One rare disease may affect only a handful of patients in the US, and another touch as many as 245,000.
A disease or disorder is defined as rare in the USA when it affects fewer than 200,000 Americans at any given time.
There is no single, widely accepted definition for rare diseases. Some definitions rely solely on the number of people living with a disease, and other definitions include other factors, such as the existence of adequate treatments or the severity of the disease.
A rare disease, also referred to as an orphan disease, is any disease that affects a small percentage of the population.
Most rare diseases are genetic, and thus are present throughout the person's entire life, even if symptoms do not immediately appear. Many rare diseases appear early in life, and about 30 percent of children with rare diseases will die before reaching their fifth birthday.
Research and Sources:
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Diprosopus|two faced baby
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Cyclopia|oneyed baby|baby with one eye
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Craniopagus parasiticus|baby with two heads|two headed baby
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Fibrodysplasia Ossificans Progressiva|excessive bone growth
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Hutchinson - Gilford Progeria Syndrome|baby with old age
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Ectopia Cordis|born with heart outside of the body
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Proteus Syndrome
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Lewandowsky-Lutz dysplasia|Tree Man
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Polymelia|multiple limbs|multiple hands|multiple legs
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Do you agree with our list ? Tell in the comments below what you think are the most rare diseases and disorders.