Tyrosine Hydroxylase Deficiency is a rare genetic disorder that affects the production of certain brain chemicals. It is not contagious and cannot be transmitted from person to person. This condition is caused by mutations in the gene responsible for producing an enzyme called tyrosine hydroxylase. Individuals with this deficiency have impaired dopamine and norepinephrine production, leading to various neurological symptoms. It is important to note that this disorder is inherited in an autosomal recessive manner, meaning both parents must carry the mutated gene for a child to be affected.