A dermatome is an area of skin that is mainly supplied by afferent nerve fibres from the dorsal root of any given spinal nerve. There are 8 cervical nerves (C1 being an exception with no dermatome), 12 thoracic nerves, 5 lumbar nerves and 5 sacral nerves.Dermatome(anatomy)FromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchForotheruses,seeDermatome(disambiguation).DermatomeDermatomesoftheUpperandLowerLimbs(Modified,afterKeegan,J.J.,andGarrett,F.D.)DermatomesoftheUpperPartsoftheBody,displayingsignificantoverlapping(Modified,fromFender,afterFoerster)Anatomicalterminology[editonWikidata]Adermatomeisanareaofskinthatismainlysuppliedbyafferentnervefibresfromthedorsalrootofanygivenspinalnerve.[1][2]Thereare8cervicalnerves(C1beinganexceptionwithnodermatome),12thoracicnerves,5lumbarnervesand5sacralnerves.Eachofthesenervesrelayssensation(includingpain)fromaparticularregionofskintothebrain.Thetermisalsousedtorefertoapartofanembryonicsomite.Alongthethoraxandabdomenthedermatomesarelikeastackofdiscsformingahuman,eachsuppliedbyadifferentspinalnerve.Alongthearmsandthelegs,thepatternisdifferent:thedermatomesrunlongitudinallyalongthelimbs.Althoughthegeneralpatternissimilarinallpeople,thepreciseareasofinnervationareasuniquetoanindividualasfingerprints.Anareaofskininnervatedbyasinglenerveiscalledaperipheralnervefield.TheworddermatomeisformedfromAncientGreekδέρμα(“skin,hide”)andτέμνω(“Icut”).Contents1Clinicalsignificance2Importantdermatomesandanatomicallandmarks3Additionalimages4Seealso5References6ExternallinksClinicalsignificance[edit]Referredpain:Consciousperceptionofvisceralsensationsisreferredtospecificregionsofthebodythatarenotsourcesofthesensations.Somereferredpainduetovisceralsensationsrefertodermatomesthatsendfiberstothesamelevelofspinalcord.Adermatomeisanareaofskinsuppliedbysensoryneuronsthatarisefromaspinalnerveganglion.Symptomsthatfollowadermatome(e.g.likepainorarash)mayindicateapathologythatinvolvestherelatednerveroot.Examplesincludesomaticdysfunctionofthespineorvir