Indiana State Barber Practice Exam

Dermatology is the branch of medicine that focuses on the diagnosis and treatment of skin disorders. This includes not only the skin itself, but also its structures, functions, and diseases. The other options, such as nails (option A), stomach (option B), and heart (option C), are all important parts of the human body, but they are not the main focus of dermatology. Nails fall under the category of cosmetology, stomach-related health issues are often treated by gastroenterologists, and heart conditions are managed by cardiologists. Therefore, these options are not the correct answer for this question.