Rare Disease Day 2017: Here's a look at most rare conditions around the world

New Delhi: Rare diseases are those ailments which affect a very small amount of population at a particular time.

There is a broad variety of disorders and symptoms that characterize a rare disease.

Here's a look at some of the most rare conditions prevalent around the world.

Microcephaly

Microcephaly is a very rare condition that is seen immediately at birth, and sometimes even before birth. The head becomes smaller than normal baby’s head at birth.

Those who have microcephaly are usually mentally retarded and will have problems with hyperactivity, dwarfism, seizures and balance problems.

Morgellons

Morgellons is classified by biting, itching, or crawling sensations, filaments growing from the skin, and skin lesions, as well as memory loss, and fatigue. There are not known drug or effective treatment for Morgellons.

Hutchinson-Gilford progeria

Hutchinson-Gilford Progeria is a genetic condition that occurs as a new mutation which is characterized by the dramatic appearance, quick aging in childhood. There is no cure for Progeria.

Fields' disease

Named after two twins, it a neuromuscular disease wherein the muscles in the body slowly deteriorates, which restricts movements.

FOP

Known as Fibrodysplasia Ossificans Progressiva, it affects the connective tissue and causes the
malformation of the big toe.