How long does it take to get symptoms of skin MRSA after you have been exposed to it?

No one knows... The answer lies in understanding how MRSA can cause skin infections. Mrsa can be on the skin for a long time, and not cause an infection unless it has an opportunity to get past the outer layer of the skin- it is only then that MRSA can begin to cause disease that manifests as symptoms. Situations that allow MRSA to do that includes nicks when razoring, ingrown hair, scratch..