Lynn´s pig has malocclusion, a teeth problem. He needs to have his teeth filled each month.
Has your pig been treated with Ivermectin? One of the first signs of mites is dandruff. Vets who are not used to pigs usually insist on doing a skin scrapping. Don´t bother. It´s extremely painful to the pig and it´s not conclusive. You can do many scrappings before seeing mites that have been there all along. Since Ivermectin is very safe, have him dosed just in case. The treatment is usually repeated 3 times, 10 days apart. As a rule of thunb, when anything is going on with the skin, you treat with Ivermectin and ask questions later.
Can I also recomment you use animal shampoo, next time? Human shampoo, even baby shampoo, doesn´t have the right pH for animal skin. The best choice is to get a shampoo for kittens and make sure it has no insecticide/medecine in it.