Acute Care Nurse Practitioner Certification Practice Exam 2026 - Free Practice Questions and Study Guide

Tinea capitis, commonly known as scalp ringworm, is primarily caused by a dermatophyte infection. Dermatophytes are a group of fungi that thrive on keratin, which is found in the hair, skin, and nails. When these fungi invade the hair follicles and skin of the scalp, they lead to the characteristic symptoms of tinea capitis, such as itchy, scaly patches and sometimes hair loss.

This condition typically arises from direct contact with the fungi, which can be transmitted through sharing personal items like hats or combs, or through close contact with an infected person or animal. Proper identification of the etiology is essential for effective treatment, as antifungal medications specifically target fungal infections.

Understanding that tinea capitis is caused by dermatophytes is critical for healthcare practitioners, as it differentiates it from conditions caused by viruses, bacteria, or yeast, which have distinct presentation and management strategies.