Which is not a feature of Kallman syndrome?: (A) Micropenis, (B) Primary amenorrhea, (C) Mirror movements of hands, (D) Mental retardation
Answer is D. Kallman Syndrome occurs due to defective synthesis of GnRH (Gonadotropin releasing hormone). KAL gene is X linked. During fetal life, the GnRH neurons originate in Olfactory Placode and then migrate along fetal olfactory neuron. They eventually wend their way to the hypothalamus. Presenting features Associated with Males: delayed pubey and micro-penis. Females: Primary amenorrhea and failure of development of secondary sexual characteristics Anosmia Colour blindness, optic atrophy SN deafness Mirror movements of hands (synkinesia) Cleft palate Renal abnormalities Mirror movements