Can scabies and allergic reaction cause extreme itching especially at night because of possible kidney problems and/ or  not drinking enough liquids?

Scabies cause itch. Scabies alone can cause severe itching with and without kidney problems or not drinking enough water. Scabies are mites that burrow under the skin and lay eggs and give off other materials that cause an allergic reaction and severe itching. The itching can continue for weeks or even longer after treatment to kill the scabies mites is completed.