allergiche

Allergiche is the feminine plural form of the Italian adjective allergico, meaning "allergic." It is used to describe feminine plural nouns or groups that have an allergy or an allergic condition. Examples include le persone allergiche, malattie allergiche, and reazioni allergiche, among others.

In medical use, an allergy is an immune system reaction to substances that are usually harmless to most people, called allergens. Common allergens include pollen, certain foods, insect stings, medicines, and pet dander. Allergic reactions can range from mild symptoms such as sneezing and itching to more severe responses like swelling or anaphylaxis. Many allergies are IgE-mediated, involving histamine release, while non-IgE mechanisms also occur.

Etymology and grammar: allergico forms the basis for the feminine plural allergiche in Italian. The word allergy itself has roots in Greek and was popularized in modern medical language in the early 20th century, often via French allergie/allergique, with Italian forms developing from these sources. In Italian, the adjectives have gender and number: allergico (masculine singular), allergica (feminine singular), allergici (masculine plural), and allergiche (feminine plural). They agree with the noun they modify, as in donne allergiche or malattie allergiche.

See also: allergia, allergene, anafilassi.