PSI Indiana Esthetician Practice Exam

The common cold is a viral infection that primarily affects the upper respiratory tract. It is caused by various viruses, with rhinoviruses being the most prevalent culprits. The transmission occurs easily through respiratory droplets when an infected person coughs or sneezes, as well as through direct contact with contaminated surfaces.

Unlike allergies, which are reactions to environmental substances and not infectious, and pneumonia, which is often a bacterial infection affecting the lungs, the common cold is a highly transmissible viral illness. The flu, while also viral, is characterized by more severe symptoms and has a different set of causative viruses. Understanding the common cold's viral nature and transmission methods highlights its prevalence as a typical and widespread condition that individuals may experience throughout the year.