Final answer:
Lice and mites are two examples of parasitic infestations of the skin, with lice causing pediculosis and mites causing scabies.
Step-by-step explanation:
Two examples of parasitic infestations of the skin are lice and mites, which fall under the categories of macroscopic parasites. These organisms live on or in the skin and can cause a variety of conditions. For instance, lice are known for causing an infestation called pediculosis, which affects the scalp, while different species of mites can cause conditions such as scabies.