13 years old student, hard-working, having good grades was taken from a declamation contest due to a bloody vomit. The patient said, that he felt anxious, began to sweat and the camera flashes started to irritate him. In examination there was no pain in the abdomen but in the left epigastrium a resistance was felt. There is no blood in a stool and no problem with defecation. Recently he had stomach problem and diarrhoea. In CT of the stomach tweezers, a staple and a paper-clip were found. The father has seen recent changes in his son's behaviour: he was moody and distant. After conversation with the boy, we could say that his contact with his parents was not good, because they've been traveling all the time and on the occasion where they stayed at home they were fighting frequently. Before a long talk boy admitted that this is not the first time he vomited blood and that there is something in his head which tells him to eat metal things. What is the reason for this?

Despite first suspiction about psychical disorders it turned out that boy has an unusually rare syndrome - PICA. The reason which persuaded the doctors to diagnose this syndrome was a deficiency of zinc, repeating episodes of vomiting and untamed urge to consume anything with with zinc.

A prisoner condemned to death, starts having hallucinations about his victims during a basketball game. He starts to run around his cell trying to free himself from his visions until he falls down. He has tachycardia. His heart starts beating so fast it pumps out air instead of blood. Curious isn't it?

During an examination in a cell a doctor affirms bluish tinge to the fingernails and lips. Upon auscultation the doctor found fluid in the patients lungs, breathing rate of 50, so he needs to be intubated and put on a respirator. Because there is no respirator in the prison the patient was transported to a hospital.

Suspicion no 2: he was taking INH - drug for tuberculosis. Chase goes to the patients cell, trying to find something extraordinary and finds a copier fluid. In meantime his heart rate's dropped to 30, atropine was administered.

Suspicion no 3: He's been drinking the copier fluid which contains about 90% methanol, enough to kill him. But since he started to drink whisky with House the ethanol has saved him. 

They also take a CT, LP to check for intracranial lesions, brain infections,autoimmune diseases. In CT no lesions, no aneurysms.

When they decided to sent him back to prison he started to bleed from the lower region of his colon. The surgery went fine. They removed almost a foot of necrotic bowel.

The solution of this case is an interpretation of his mental state, looking for the reason why he killed all those people. There were : jealousy, revenge, ''retribution''and fury. So what's the differential for such aggressiveness? Excess testosterone, steroids. Adrenaline! The diagnosis - pheochromocytoma. Pheochromocytoma  sits on top of the adrenal gland, randomly spits out oodles of adrenaline. It explains everything: the tachycardia, pulmonary edema, the vasoconstriction that cause the necrotic bowel...