Your immune system uses a huge army of defender cells - different types of white blood cell. You make about 1000 million of them every day in your bone marrow. Some of these cells, called macrophages, constantly patrol your body, destroying germs as soon as they enter. This is your 'natural' or inborn immunity. But if an infection begins to take hold, your body fights back with an even more powerful defence of T- and B-cells. They give you acquired immunity, so that the same germ can never make you as ill again.
Conversion disorder- Involves a patient who has a neurological issue of some sort after a stressful event (divorce, loss) while lab tests don't show a neurological explanation for the issue.
Somatoform disorder- Patient consistently complains of physical symptoms without a physiological explanation.
I'm pretty sure the answer would be: If the person is upright, carefully ease the person to the floor. this is of course after calling 911, followed by looking for the object lodged in the persons throat.
