To explain the necessity of the ban
The purpose of a Tragic drama is to cause Catharsis, that is pity for the main character who is often a better person than ourselves. The purpose of a Comedy play is to mock people who are worse than us and learn from their mistakes. This was defined by Aristotle, so you can fit this definition into your possible answers.
No because it was not his grandmother's fault he believes
Well derm is another term used for dermis which, in anatomy, is the thick layer of tissue below the epidermis that forms the true skin, containing blood capillaries, nerve endings, sweat glands, and hair follicles.
The definition of logy is: slow in movement or thought, or in other words sluggish.
The best definition that I can give for these two words is slow acting skin?
Another thought that comes to mind is the word dermatology which is the branch of medicine that studies the diagnosis and treatment of skin disorders.