is a rare inherited disorder causing extreme sun sensitivity and developmental problems.

is severe eye dryness caused by vitamin A deficiency.

is a rare genetic disorder causing premature aging from DNA repair defects.

is a rare genetic condition causing developmental delay and learning difficulties.

is a very rare genetic condition causing severe brain and skull malformations.

is a rare genetic disorder causing muscle, hormone, and learning problems.

is a rare genetic condition caused by extra X chromosome material.

is a rare genetic condition causing varied developmental and health problems.

is a rare genetic condition caused by extra X chromosome material.

is a rare genetic condition that can affect development, hearing, and vision.

is a rare genetic condition that can affect development and learning.

is a rare genetic condition that can affect development and learning.

is a rare condition affecting sex development and causing other birth differences.

is a rare inherited disorder affecting sugar processing, growth, bones, and development.

is a condition caused by an abnormal number of Y chromosomes.

is an inherited hearing loss passed from fathers to sons.

is a rare inherited hearing loss passed from fathers to sons.

is an inherited hearing loss condition passed from fathers to sons.

is inherited through gene changes on the Y chromosome.

is a rare inherited cause of male infertility from Y chromosome changes.

is a genetic condition causing low sperm production and male infertility.

is a rare brain tumor that starts above the brainstem.

is a bacterial skin infection that can also affect bones.

is a mosquito-borne viral infection that can cause fever and organ damage.