Cutar barci tana nufin yanayin da ke kawo cikas ga yanayin barcin mutum na yau da kullun kuma yana iya haifar da matsalolin barci, yin barci, ko samun kwanciyar hankali. Cututtukan barci na iya haɗawa da yanayi daban-daban kamar rashin barci, barci mai barci, narcolepsy, ciwon ƙafar ƙafa, da sauransu.
