Night increases itch. Everything that itches, itches worse at night. That's because you have your mind on more important things during the day; at night, with nothing important to think about, your attention turns to whatever is itching. There are tons of causes of itching, most of which are not serious, but if it's bothersome, you should see a dermatologist and get it sorted out.
Itchy feet. The american academy of dermatology defines pruritus as an itch or sensation that makes a person want to scratch. This condition involves the nerve endings in the skin, and according to the american academy of family physicians, it may indicate the presence of an underlying disease in 10 to 50 percent of older adults. See your doctor.