I have a friend who is a girl. she is suffering stomach ache since 20 days. She has undergone endoscopy two times. But the pain was not yet gone. She went to another hospital. Their the did some tests and scanning. In the test at the last their is IMPRESSION : PCOD PATTERN. She asked doctor about it. He said to google pcod. But we did not get clear clarification. Please can you tell me what is pcod and is it dangerous.