Which of the following scalp or hair conditions would generally prohibit (contraindicate) a salon service?

A cosmetologist should not perform a service when the client has an infectious, inflamed, or broken-skin condition of the scalp or skin — such as an active fungal infection (like ringworm), severe inflammation, open sores, or signs of infestation — because the service could spread infection or worsen the condition. In such cases, the client should be referred to a physician. Recognizing contraindications protects the client, the professional, and other clients. Distinguishing normal conditions from those that prohibit service is a key exam and safety skill.