Iowa Cosmetology Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

Itching is a common sign of scalp disorders because it often indicates irritation, inflammation, or sensitivity on the scalp. Conditions such as dermatitis, psoriasis, or fungal infections can lead to the sensation of itching as a response to heightened activity in the nerve endings of the skin. This symptom can be an alert to the individual that there may be an underlying issue requiring attention, such as an infection or allergic reaction.

In contrast, hair growth is not necessarily an indicator of scalp disorders; it is a general physiological process that can occur regardless of scalp health. Increased luster and hair thickness are also not typically associated with scalp disorders. In some cases, a healthy scalp may produce shiny, thick hair, but these characteristics do not serve as signs of a problem; they rather indicate a healthy scalp and hair condition. Therefore, itching stands out as a more definitive symptom of an underlying issue with the scalp.