What is a common symptom of contact dermatitis in clients?

A hallmark symptom of contact dermatitis is redness and itching of the skin. This condition arises when the skin comes into contact with an irritant or allergen, leading to an inflammatory reaction. The body’s immune response to these irritants can result in the skin becoming swollen and irritated, showcasing noticeable redness. Additionally, the presence of itching often accompanies these symptoms, provoking discomfort for the affected individual.

In the context of this question, while dry, flaking hair, excessive hair shedding, and scalp tenderness may be related to different scalp or hair conditions, they do not specifically point to contact dermatitis. Dry, flaking hair is often associated with conditions like seborrheic dermatitis or other scalp issues, while excessive shedding is typically linked to different hair loss conditions. Scalp tenderness could arise from various causes, such as tension or inflammation, but does not specifically indicate contact dermatitis, which is characterized primarily by skin irritation in areas exposed to a potential allergen.