Mild intellectual disability is defined as an intelligence quotient (IQ) in the range of 50-69.

A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.

Increase in the number or proportion of lymphocytes in the blood.

Increased susceptibility to infections.

Neutropenia with an absolute neutrophil count (ANC) less than 1,500,000,000/L lasting for more than 3 months.

An abnormally low number of neutrophils in the peripheral blood.

A chronic irritative conjunctivitis, which commonly presents with general irritation and redness of the eyes, with a burning, dry, or foreign-body sensation of the eyes.

The natural longitudinal (posterodistal) convex arch is not present or is inverted.

Trichorrhexis nodosa is the formation of nodes along the hair shaft through which breakage readily occurs. It is thus a focal defect in the hair fiber that is characterized by thickening or weak points (nodes) that cause the hair to break off easily. The result is defective, abnormally fragile hair.

Underdevelopment of a fingernail.

Reduced number or density of pubic hair.

Abnormally curly or curved eyelashes.

Decreased length of the eyelashes (subjective).