A man comes in to a clinic and tells the doctor that he is in great pain.
It hurts if he prods his arm with a finger. The same applies to his leg and his torso.
He says that after looking on the internet, he is sure that he has fibromyalgia syndrome, and asks to be prescribed some painkillers. Also, he is worried that it could be necrotising fasciitis and demands a biopsy and antibiotics.
The doctor, without saying a word, gently grabs his hand, then squeezes his index finger. The man feels a shooting pain and screams in agony.
The diagnosis? A broken finger.