Allergy

"I'm allergic to feathers, these wings are making me itch."

- Dwarf.

An allergy is something which triggers an allergic reaction. This is the immune system defending the body against attack by bacteria and viruses. Allergic reactions occur to normally harmless environmental substances known as allergens; these reactions are acquired, predictable, and rapid.

On 14 February, 1993, Gilderoy Lockhart hired some dwarves to sing Valentines around Hogwarts School of Witchcraft and Wizardry, dressed as cupids. One of them was allergic to feathers and his fake wings made him itch.

Appearances

 * Harry Potter and the Chamber of Secrets (video game)