Suppose you have a skin ailment that is annoying and after two trips to the doctor, two different prescription ointments and many home remedies, you still have an itchy patch on your shin that Will. Not. Go. Away. Suppose summer is coming, you're getting pissed and you decide to do some Dr. Googling and figure this out once and for all. Suppose you come up with a variety of possible diagnosis but aren't quite sure.
Suppose you hit images.
You will see a screen filled with oozing, pus-filled, bumpy, red, scaly skin that will cause you to jump out of your chair and knock your coffee over. Then you will throw up a little lot in your mouth.