Příčiny
VitaminAdeficiencycausedbyvariousreasons.Forexample,chronicdiarrhea,liverandgallbladderdisease,albuminreductionisnotenoughtotransportvitaminA,andseverewastingdiseasecausesexcessiveconsumptionofvitaminA,whichcanleadtovitaminAdeficiencysymptoms.VitaminA0.3μgisequivalentto1internationalunit(U).Theminimumdailyrequirementforadultsis20U/kgor40Uβ-carotene.Infact,thedailysupplyforadultsshouldnotbelessthan5000U.
Klinické projevy
Patientsshouldeatmoremilk,eggyolks,livers,andcarrotsrichinvegetarianfoodstoactivelytreatthechronicorunderlyingdiseasesdiscovered.OralvitaminAis50,000U/d,andseverecasesare100,000to200,000U/d.Itwillbereducedlater.Long-termlarge-scaleusecancausevitaminAhypertrophy.Ifitiscombinedwithothervitamindeficiencies,itshouldbesupplementedaccordingly.Payattentiontoprotecttheskinlesionsoftheeyesandusecodliveroilointment,10%ureacream,tretinoincream,etc.forexternaluse.
Metoda tradiční čínské medicíny
Therapeuticmethod:invigoratethespleenandstomach,nourishbloodandmoisturizetheskin.
Předpisy: AtractlodesMacrocephala10g, Poicocos10G, TangerinePeel10g, Lentils10Gangelica10G, Redpeonyroot10G, muxiang10g, frifoupnh, frifingon, salvian, iTion-thotn.
Prevence
ChronicwastingdiseasesandexcessivedrinkingrestrictionsshouldpayattentiontosupplementingvitaminA.
Patogeneze
VitaminAconstitutestheretinalphotosensitivepigmentrhodopsinandplaysanimportantroleinnightvisionandparticipatesincarbohydratemetabolismandglycoproteinsynthesistomaintainthegrowthanddifferentiationofepithelialtissues.Whenitisdeficient,thelevelsofretinalrhodopsinandopsindecrease,leadingtonightblindness.Scalymetaplasiaofthemucousmembranesoftheeyes,upperrespiratorytractandgastrointestinaltract,causingmucosalkeratosisandhyperkeratosis,resultingindryeye,dryskindesquamation,follicularkeratosis,papulesandaseriesofeyeandskinsymptoms.