Which of the following conditions is often a result of viral infections?

Chickenpox is a condition that is specifically caused by the varicella-zoster virus, which is a viral infection. It is characterized by an itchy rash, fever, and fatigue. Understanding this condition involves recognizing that it typically presents with distinctive symptoms and follows a particular course.

Viral infections can manifest in various ways, and chickenpox is one of the classic examples. The importance of identifying viral infections lies in their different treatment approaches compared to bacterial infections or other medical conditions. For instance, while bacterial infections may require antibiotics, viral infections like chickenpox are typically managed with supportive care, including antihistamines for itching and plenty of fluids.

In contrast, the other options are associated with different causes. Strep throat is caused by bacterial infection, allergies are related to immune system reactions to specific allergens, and dermatitis refers to inflammation of the skin that can have multiple triggers, including irritants and allergens, but not viruses directly.