To make sure you are prepared for every outcome so if in the future if something goes unplanned you already somewhat expected it
The brain stem which is composed of the Pons, The Medulla, and the Midbrain serve a very vital function... They control the functions that keep you alive; Heart Rate, Respiratory Rate, Breathing input and output, Blood pressure, as well a vasomotor functions. So taking this into account, an injury to the brain stem is extremely bad, as that can and will most definitely be very lethal.
Answer:
Is this a health question
Explanation:
rlly
The Cleveland clinic says that allergies are the main cause for the high levels. But some other causes can include skin disorders, tumors and autoimmune disorders