hair defect-photosensitivity-intellectual disability syndrome hair defect-photosensitivity-intellectual disability syndrome hair defect-photosensitivity-intellectual disability, also known as calderon-gonzalez-cantu syndrome is a rare syndrome characterized by fragile hair, photosensitive eyebrows and eyelashes and intellectual disability which doesn't progress, and no metabolic aberration. only three sisters that were born to consanguineous parents have been described in medical literature. hair defeft-photosensitivity-intellectual disability syndromespecialtymedical geneticssymptomsfragile, stubby hair, photosensitive eyebrows and eyelashes and intellectual disabilities