l usion ▁or ▁deviation ▁of ▁the ▁eye ▁that ▁can ▁lead ▁to ▁amb ly op ia . ▁Very ▁rarely , ▁extremely ▁large ▁hem ang iom as ▁can ▁cause ▁high - output ▁heart ▁failure ▁due ▁to ▁the ▁amount ▁of ▁blood ▁that ▁must ▁be ▁p ump ed ▁to ▁excess ▁blood ▁vessels . ▁Les ions ▁adjacent ▁to ▁b one ▁may ▁cause ▁er os ion ▁of ▁the ▁b one . ▁ ▁The ▁most ▁frequent ▁compla ints ▁about ▁I H s ▁stem ▁from ▁psych oso cial ▁comp lications . ▁The ▁condition ▁can ▁affect ▁a ▁person ' s ▁appearance ▁and ▁prov oke ▁attention ▁and ▁mal icious ▁re actions ▁from ▁others . ▁Part icular ▁problems ▁occur ▁if ▁the ▁lip ▁or ▁nose ▁is ▁involved , ▁as ▁dist ort ions ▁can ▁be ▁difficult ▁to ▁treat ▁surg ically . ▁The ▁potential ▁for ▁psych ological ▁injury ▁develop s ▁from ▁school ▁age ▁on ward . ▁Consider ing ▁treatment ▁before ▁school ▁begins ▁is , ▁therefore , ▁important ▁if ▁ade qu ate ▁sp ont aneous ▁improvement ▁has ▁not ▁occurred . ▁Lar ge ▁I H s ▁can ▁leave ▁visible ▁skin ▁changes ▁secondary ▁to ▁severe ▁stretch ing ▁that ▁results ▁in ▁alter ed ▁surface ▁texture . ▁ ▁Lar ge ▁segment al ▁hem ang iom as ▁of ▁the ▁head ▁and ▁neck ▁can ▁be ▁associated ▁with ▁a ▁dis order ▁called ▁P H AC ES ▁synd rome . ▁ ▁Lar ge ▁segment al ▁hem ang iom as ▁over ▁the ▁lum bar ▁sp ine ▁can ▁be ▁associated ▁with ▁d ys raph ism , ▁ren al , ▁and ▁u ro gen ital ▁problems ▁in ▁association ▁with