In today’s lesson, students will learn about “hands and feet diseases and disorders,” which is important for manicure and pedicure practices. The lesson emphasizes the necessity of identifying these conditions during client consultations, as some may be contraindications for service. The instructor will outline various disorders, starting with ingrown toenails, which are most common in feet and typically occur due to improper nail trimming or cramped footwear. The lesson aims to equip students with the skills to recognize these issues, provide appropriate advice, and understand when to refer clients to medical professionals.