Pruritus or itchy skin is an unusual, unforgettable, and unwanted sensitivity that leads to an urge to scratch. Pruritis is often caused due to lack of moisture in the skin. It is commonly seen in old age and deteriorates over time. The pruritus rash or itchiness may appear normal, red, or rough to the touch. The person's skin may appear thick and blood-red when scratched vigorously, leading to infection.