One Side Of My Face Is Pale, Sallow,sunken In,while Other

One side of my face is pale, sallow,sunken in,while other cheek is rosy and healthy looking: Why ?
Sorry to bother you, I misunderstood the purpose of this web-siteI honestly thought
it was a "free info site" Please erase any info that I entered,(e-mail adress, etc)......
.........................................Sincere thanks ............................ol'tom