What term is used to describe an unpleasant sensation that causes the desire to scratch?

The term that describes an unpleasant sensation prompting a desire to scratch is "pruritic." This word originates from the Latin word "pruritus," meaning to itch. It is specifically used in medical contexts to denote a condition characterized by itching, which can arise from various causes such as allergies, skin conditions, or systemic issues.

In contrast, while "itchy" is a more casual adjective describing the sensation itself, "pruritic" has a definitive clinical connotation that may be used in professional healthcare discussions and literature. The terms "dermatitis" and "inflamed" refer to specific medical conditions or states rather than directly describing the sensation of itching. Dermatitis is an inflammation of the skin that can lead to itching as a symptom, while "inflamed" typically indicates an area of the body that is swollen and red due to various factors, not just itching. Thus, "pruritic" encapsulates the sensation of itching that inspires the urge to scratch in a precise manner.