What are the disease of the nail that should not be treated in the salon?

Nail diseases that should not be treated in a salon include fungal infections, ingrown toenails, nail psoriasis, and any signs of bacterial infections or warts. Treating these conditions without proper medical evaluation can worsen the problem or spread infection. It's essential for clients to seek advice from a healthcare professional for diagnosis and appropriate treatment. Salon professionals should always prioritize the health and safety of their clients by referring them to medical experts when necessary.