Psoriasis (noun)

1. A chronic skin condition characterized by red, scaly patches on the skin.
2. A noncontagious, chronic skin disorder characterized by dry, red, itchy patches and scales on the skin.

Origin:

The word psoriasis comes from the greek word "psōra" meaning "itch" and "-iasis" indicating a condition or disease. it was first used in english in the early 18th century.

Examples:

1. His psoriasis made him self-conscious about wearing short sleeves.
2. She had to apply medicated cream to her psoriasis every day.
3. His psoriasis made it hard for him to sleep at night.
4. She was prescribed a new medication for her psoriasis that cleared it up completely.
5. Psoriasis is a chronic condition that requires ongoing treatment.