What happen to dr.jekyll when he becomes Mr. Hyde what scares him and what attracts him about Mr. Hyde?

When Dr. Jekyll becomes Mr. Hyde, Jekyll turns into a shorter, hairier, younger man that looks absolutely nothing like himself. This is one of the main reasons that Dr. Jekyll is so attracted to the character Mr. Hyde: it gives him the ability to do whatever he pleases and not have to suffer consequences that may affect his status in society. Hyde is driven by primal desires, whether it be rage, lust, or frivolousness. Through Hyde, Dr. Jekyll can live out any and all of his desires and get away with it; the moment he needs to escape he can simply turn back into his "true" self. However, conflict arises when suddenly the primal Hyde can no longer be controlled by Jekyll, nor can his vicious actions contained.