Turner syndrome (TS) is a chromosomal disorder, caused by either complete or partial X monosomy (i.e., absence of one member of a pair of chromosomes) in some or all cells. It affects approximately 1 in 2,500 female live births. However, only about 1% of fetuses with 45, X karyotype (image of one's chromosomes) are carried to term, and up to 10%…

Sickle Cell Disease (SCD) is an inherited blood disorder affecting approximately 1 in every 365 African American births. Students with SCD are likely to experience ongoing complications that will interfere with their attendance, functioning at school, and overall daily functioning throughout their lives. This article provides education about SCD…

Noonan syndrome (NS) is a common genetic disorder that can cause a vast array of health conditions. Characteristics of NS include specific facial features as well as a higher chance of developing congenital heart disease, failure to thrive, and vision abnormalities. These deficits may manifest as behavioral and emotional difficulties, leaving…

Treacher Collins syndrome (TCS) is a rare genetic disorder that affects the development of bones and tissues of the face and is characterized by deformities of the ears, eyes, cheekbones, and chin. The signs and symptoms of TCS vary greatly, ranging from unnoticeable to very severe manifestations and malformations. This article provides a history…

Tourette's disorder is a neurodevelopmental disorder that affects many school-age children and adolescents across the United States. According to the Centers for Disease Control and Prevention (CDC, 2019), one in every 160 school-age children in the United States has Tourette's disorder. School psychologists are called to work with these students…

School psychologists are asked to provide a number of different services in schools, including evaluating and providing recommendations to educators and parents on children and adolescents with rare genetic conditions. One genetic disorder with physical, cognitive, and behavioral features is Prader-Willi syndrome (PWS). PWS is a unique genetic…

Spina bifida (SB) refers to a subgroup of congenital defects where the neural tube fails to fuse, often resulting in a protruding spinal cord. This is often due to a defect or absence of vertebral arches resulting from a failure of the mesoderm to organize over the region of the defect. SB occurs during gestation between the third and sixth week…

Tourette syndrome (TS) is one of three separate tic disorders. By definition, children with TS must have at least two motor (movement) tics and one vocal (or sound tic) for at least a year. The other tic disorders are chronic tic disorder (motor or vocal tics, but not both for at least one year) and transient tic disorder (motor and/or vocal tics…