According to gastroenterologist William Haubrich: A patient may exhibit sudden, intense, epigastric pain and a rigid abdomen. He is thought to have a perforated peptic ulcer. But at operation, only a penetrating ulcer is found, sealed off by adhesion to the omentum or anterior abdominal wall. Such a patient is said to have a<unk>  of acute free perforation as a complication of his peptic ulcer disease.
Forme fruste
Onsan illness
Outline of bipolar disorder
Unitary psychosis
Pseudoneurotic schizophrenia
Simple-type schizophrenia
Beck's triad 
Ataque de nervios