Which hair and scalp disorders cannot be treated in the salon?

Certain hair and scalp disorders, such as alopecia areata, psoriasis, and seborrheic dermatitis, typically require medical intervention and cannot be effectively treated in a salon setting. These conditions often need a dermatologist's assessment for appropriate diagnosis and treatment options, such as prescription medications or specialized therapies. Additionally, infections like scalp ringworm or severe cases of folliculitis should be referred to a healthcare professional. Salon treatments may alleviate some symptoms but won't address the underlying medical issues.