riley-day syndrome…

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chromosomes, dna, familial dysautonomia, hereditary sensory, autonomic neuropathy, type iii, riley-day syndrome, inherited disorder, nerve function throughout the body, present at birth, grow worse over time, riley-day syndrome is inherited, an autosomal recessive trait, that a person must inherit a copy, the malfunctioning gene from each parent, develop the condition, seen most often in people of eastern european jewish ancestry, ashkenazi jews, incidence is 1 in 3,700, disease, mutation, the ikbkap gene on chromosome 9, rare, in the general population, poor growth, feeding difficulties, breath holding, sweating eating, long episodes of vomiting, lack of response to painful stimuli, seizures, hypotonia, low muscle tone, recurring bouts of fever, recurring bouts of high blood pressure, poor coordination, unsteady gait, an unusually smooth tongue surface, decreased taste, diarrhea/constipation, severe scoliosis, skin blotching, infants, condition have feeding problems, develop pneumonia, breathing food into airways, vomiting, sweating spells begin, the infant matures, young children, have breath-holding spells that produce unconsciousness, hold breath, long enough to pass out, feeling the discomfort that normal children would, a hallmark of riley-day syndrome is insensitivity to pain, leads to unnoticed injuries, injuries that might not have occurred had the child sensed discomfort, children, not feel the normal sensations that generally warn of impending injury, drying, the eyes, pressure over pressure points, chronic rubbing, chaffing, bone, skin pain, burns, poorly perceived, feel visceral, internal, pain, menstrual cramps, intelligence is expected to be, in the normal range, diagnosis of riley-day syndrome is made, observing the signs, by molecular genetic testing, the ikbkap gene located on chromosome 9, detection rate, number of existing cases, ashkenazi jewish population is >99%, such testing is used, diagnosis, carrier detection, prenatal diagnosis, absence of axon flare response after intradermal histamine injection, histamine is injected just under the skin, swelling, redness, lack of this flair response, test is positive, indicates riley-day syndrome, absent, decreased deep tendon reflexes, absence of overflow tears, emotional crying, tiny pupils after administering methacholine, pilocarpine, eye, decreased deep tendon reflexes, in 95% of patients, fd, knee jerks cannot be elicited, parents of ashkenazi jewish ancestry, protection from injury, treatment of aspiration pneumonia, anticonvulsant therapy, seizures, liquid tears, bethanechol, prevent drying of eyes, anti-emetics, control vomiting, postural hypotension, low blood pressure, standing, managed, increased fluid, salt intake, caffeine, waist-high elastic stockings, advances in diagnosis, survival continues to improve, currently, a newborn, riley-day has a 50% chance of reaching age 30, following symptoms of "autonomic crises" occur in, 40% of patients, excessive sweating, the head, torso, blotching, the face, torso, mottling, the hands, feet, hypertension, high blood pressure, tachycardia, rapid heart rate, nausea/vomiting, severe dysphagia/drooling, irritability, insomnia, worsening of muscle tone, call doctor, symptoms change, individuals of eastern european jewish background, families, a history of riley-day syndrome who, thinking of having children, seek genetic counseling to discuss risk, undergo testing where appropriate, genetic testing is very accurate, riley-day syndrome, diagnosis of affected individuals, carrier detection, prenatal diagnosis.