A woman enters her doctor's office.
"Doctor, please, I'm so scared, I can feel I'm turning into a werewolf!"
The doctor frowns.
"That's a serious condition."
She pats the examination table.
"Let's get you checked out."
The woman sits down and the doctor takes her hand.
"Now, if you were turning into a werewolf, you would be growing claws, right?"
The woman nods.
"I can feel it happening!"
The doctor gently inspects her fingernails.
"Hmm, I don't see any claw formation in either hand."
The woman calms down somewhat.
"Let's look at your fangs."
The doctor looks at the woman's incisors.
"I don't see anything out of the ordinary. How do you feel?"
"Much better. Thank you, doctor."
Adapted from a Tumblr post that has never stopped bouncing around my head since I first read it