X-linked intellectual disability-psychosis-macroorchidism syndrome

X-linked intellectual disability-psychosis-macroorchidism syndrome (also known as Stoll syndrome or intellectual disability-psychosis-macroorchidism syndrome) is a rare X-linked genetic condition characterized by the combination of moderate to severe intellectual disability, psychiatric manifestations (particularly psychosis), and macroorchidism (abnormally enlarged testes). The syndrome primarily affects males, consistent with its X-linked inheritance pattern, while carrier females may be unaffected or show milder features. The condition affects multiple body systems, most notably the central nervous system and the reproductive system. Intellectual disability is typically evident from childhood and ranges from moderate to severe. Psychiatric symptoms, including psychotic episodes, tend to emerge during adolescence or early adulthood. Macroorchidism becomes apparent around or after puberty. Additional features that have been reported in some affected individuals include behavioral disturbances and speech difficulties. The syndrome shares some clinical overlap with fragile X syndrome, which also features intellectual disability and macroorchidism, but it is considered a distinct entity. There is currently no specific curative treatment for this syndrome. Management is supportive and symptomatic, involving special education programs, speech and behavioral therapy, and psychiatric treatment including antipsychotic medications for the management of psychotic episodes. A multidisciplinary approach involving geneticists, psychiatrists, psychologists, and endocrinologists is recommended for optimal care.

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