Riley-Day syndrome is an inherited disorder that affects nerves
throughout the body. Familial dysautonomia; Hereditary sensory
and autonomic neuropathy - type III (HSAN III) Causes,
incidence, and risk factors Riley-Day syndrome is passed down
through families (inherited). A person must inherit a copy of
the defective gene from each parent to develop the condition.
This condition is seen most often in people of Eastern European
Jewish ancestry (Ashkenazi Jews). The disease is caused by a
change (mutation) of the IKBKAP gene on chromosome 9. It is rare
in the general population. Breath holding spells (can lose
consciousness) Decrease in sense of taste Inability to feel pain
and changes in temperature (can lead to injuries) Call your
doctor if symptoms change or get worse. A genetic counselor can
help teach you about the condition and direct you to support
groups in your area. Genetic DNA testing is very accurate for
Riley-Day syndrome. It may be used for diagnosing people with
the condition or who carry the ge