In the case of a specific the anxiety produced by the given stimulus or situation is typically disproportionate to the actual threat the stimulus or situation poses.

phobia

Explanation:

Phobia defined as irrational fear against something. The fear will cause anxiety feeling that make the threat feels much bigger than it should be.  (For example, some people have a phobia of insects, and will scream uncontrollable and sobbing every time they see one of them)

A person will determine a situation as dangerous or threatening based on their past experience. This will vary greatly, which make phobia can come from any condition.  Many phobias not comes from a dangerous or life-threatening condition but acquired from a really unpleasant memory.

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.