Question

Using your knowledge of roots what diagnosis would you give to someone who fears campfires

Answer 1

Pyrophobia. 
Pyro means "fire" and phobia means "the fear of" 

Answer 2

Pyrophobia.

The whole phobia is an irrational fear of a specific situation, activity or object. The phobia forces the person to avoid the target of their fear, because associated with fear other symptoms appear: anxiety, fast heartbeat, hot or cold waves, choking, feeling of suffocation, tremors, dizziness, fainting and other unpleasant sensations.

Pyrophobia is the phobia of fire. People with this phobia can suffer a lot in everyday life: they do not approach stoves, fireplaces and candles, and tend to be always controlling the fire, preventing something from happening. They do not even light matches or lighters.