Medical Eponyms Letter J

163. Jacksonian march is in simple partial seizures - clonic movements of a single muscle group spreading to involve contiguous regions of the motor cortex.
164. Jamaican vomiting sickness is poisoning from hypoglycin A in unripe ackee fruit; hypoglycin A is potent hypoglycemic agent that decreases rate of fatty-acid beta oxidation probably by inhibition of acyl dehydrogenase flavin-dependent oxidation; causes liver damage indistinguishable from Reye’s syndrome.
165. Jatene’s arterial switch is for treating transposition of great vessels - pulmonary artery and aorta are transected above valves and switched - and coronary arteries are moved from old aortic root to new aorta (former pulmonary root).
166. Jefferson fracture is fracture of C1 at more than one site; rarely associated with neurological deficits because of size of spinal canal at this level.
167. Jerusalem syndrome is psychosis affecting visitors to Jeruasalem whereby afflicted develop psychotic religious delusions; affects a handful of visitors each year.
168. Job’s syndrome - recurrent staphylococcal cutaneous infections are more common among individuals who have eosinophilia and elevated serum levels of immunoglobulin e. this is called job's syndrome.
169. Jod-Basedow phenomenon is thyroid hyperfunction induced by excess iodine ingestion in patients with various thyroid disorders; Jod German for iodine; K. A. Von Basedow.
170. Jolly test is in myasthenia gravis - a sequence of repetitive nerve stimulation (RNS) studies specifically designed to look for neuromuscular junction disease. A positive test is a >10% decremental response with 3 Hz repetitive stimulation - 50-80% sensitive. After Friedrich Jolly - German neurologist - 1844-1904.
171. Jones’s fracture is fracture at the base of the fifth metatarsal diaphysis.
172. Jumping Frenchmen of Maine syndrome is unusually extreme startle reaction that occurs in selected populations with reactions including echolalia - echopraxia; first described in French Canadian lumberjacks in the Moosehead Lake Region of Maine in the late 19th century; also described as latah in Malaysia.