Final answer:
The six major categories of impaired skin integrity are bacterial, fungal, viral, and parasitic infections, skin cancer, and physical injuries like burns and wounds. Aging also affects the skin's integrity.
Step-by-step explanation:
The six major categories of impaired skin integrity include: bacterial infections, fungal infections, viral infections, parasitic infections, skin cancer, and physical injuries such as burns and wounds. Conditions like albinism and vitiligo, which affect skin's appearance, fall under skin disorders. Moreover, the aging of the integumentary system leads to a host of changes including the reduction of mitosis in the stratum basale resulting in a thinner epidermis, less elastic dermis, and a hypodermis with reduced fat stores, all contributing to diminished skin integrity and slower wound healing.