Anaphylaxis, CTCAE

**Semantic type:** Finding

**Definition:** A disorder characterized by an acute inflammatory reaction resulting from the release of histamine and histamine-like substances from mast cells, causing a hypersensitivity immune response. Clinically, it presents with breathing difficulty, dizziness, hypotension, cyanosis and loss of consciousness and may lead to death.

**Synonyms:** - Anaphylaxis - Anaphylaxis - Anaphylaxis