▁diagn osis , ▁six ▁percent ▁of ▁the ▁affected ▁persons ▁were ▁dead , ▁mostly ▁from ▁ap nea ▁( a ▁common ▁result ▁of ▁sm other ing ) ▁or ▁star v ation , ▁and ▁seven ▁percent ▁had ▁long - term ▁or ▁permanent ▁injury . ▁About ▁half ▁of ▁the ▁affected ▁had ▁sib lings ; ▁ 2 5 % ▁of ▁the ▁known ▁sib lings ▁were ▁dead , ▁and ▁ 6 1 % ▁of ▁sib lings ▁had ▁sympt oms ▁similar ▁to ▁the ▁affected ▁or ▁that ▁were ▁otherwise ▁susp icious . ▁The ▁mother ▁was ▁the ▁perpet r ator ▁in ▁ 7 6 . 5 % ▁of ▁the ▁cases , ▁the ▁father ▁in ▁ 6 . 7 %. ▁ ▁Most ▁present ▁about ▁three ▁medical ▁problems ▁in ▁some ▁combination ▁of ▁the ▁ 1 0 3 ▁different ▁reported ▁sympt oms . ▁The ▁most - fre qu ently ▁reported ▁problems ▁are ▁ap nea ▁( 2 6 . 8 % ▁of ▁cases ), ▁an ore x ia ▁or ▁feed ing ▁problems ▁( 2 4 . 6 % ▁of ▁cases ), ▁di arr he a ▁( 2 0 % ), ▁se iz ures ▁( 1 7 . 5 % ), ▁cy anos is ▁( blue ▁skin ) ▁( 1 1 . 7 % ), ▁behavior ▁( 1 0 . 4 % ), ▁ast h ma ▁( 9 . 5 % ), ▁aller gy ▁( 9 . 3 % ), ▁and ▁fe vers ▁( 8 . 6 %). ▁Other ▁sympt oms ▁include ▁failure ▁to ▁th rive , ▁vom iting , ▁ble eding , ▁r ash , ▁and