I believe that you should treat them with respect even though you don't agree with them. You should be unbias.
The rise or fall in a price is an example of Inflation risk.
I think the flat hard surface is to ensure that the patients arm will not move when the needle is administered since it is usually critical that the needle is inserted in the correct vein which is only a fine target requiring careful positioning of the needle.
Anorexia or purging otherwise known as bulimia.
It increases by almost 50%