Foreign body reaction

A granulomatous reaction around a foreign material within a tissue or organ, often characterized by giant cells. This may present as acute or chronic gingival inflammation and may produce tattoos or red, red/white or suppurative lesions.

A reaction involving pain, photophobia, and lacrimation, which occurs when a foreign body comes into contact with the surface of the cornea or the conjunctiva, due to stimulation of the ophthalmic branch of the fifth cranial nerve.

A localized inflammatory response elicited by any material (e.g., a splinter or a suture) that would not normally be found within the body.