From Dog
The itchy dog[1]

Pruritus is a term used to characterize a sensation of itchiness.

In dogs, this manifests as scratching, biting and rubbing of the affected area against objects to alleviate a pain sensation, usually involving the skin.

Pruritus is a symptom rather than a diagnosis and has many causes.

Commonly observed diseases which cause pruritus include:

Treatment for pruritus usually involves proprietary anti-inflammatory medications which can be applied topically to the skin or given orally or parenterally.