A Non-Diagnosis

A woman rushed to see her doctor, looking very much worried and all
strung out. She rattled off, "Doctor, take a look at me. When I woke up
this morning, I looked at myself in the mirror and saw my hair all wiry
and frazzled up, my skin was all wrinkled and pasty, my eyes were
blood-shot and bugging out, and I had this lifeless look on my face!
What's wrong with me, Doctor?"

The doctor looked her over for a couple of minutes, then calmly said,
"Well, I can tell you that there's nothing wrong with your eyesight."