Chap toasters
A teratogen is an agent that causes birth defects.
Pathogen
Bruise (medical term = ecchymosis)
A teratogen is a factor that causes birth defects.
Fluorescein stain causes the cornea to appear green with lit with a Woods lamp.
It can be, along with physical, medical, environmental and other causes.
Mumps
i donr know
Allergic reactions, medical conditions like asthma
The Medical term is Precipitin.
Mostly counseling, or actually facing and overcoming your fear, but there are not any majorly successful medical treatments.