Final answer:
Scabies and mites are a problem for humans because they lay eggs under the skin, causing intense itching. They can also cause skin conditions like vesicles and dermatitis.
Step-by-step explanation:
Scabies and mites are a problem for humans because they lay eggs under the skin and cause intense itching. The itching is often worse at night and can lead to skin infections if scratched. Mites can also cause other skin conditions such as vesicles and dermatitis. Additionally, some mites release feces that can be inhaled and cause an allergic reaction.