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XXXVIII - Miscellaneous - Varia

Hypersensitivity reaction (may manifest with fever and/or skin, throat or airway involvement)

Last update 17/06/2026

Hypersensitivity and infusion reactions. May mimic systemic vasculitis (PMID 30746133). See also under 'Anaphylaxis' (Xf). Hypersensitivity reactions include the rapid development of malaise, cough, dyspnea, wheezing-bronchospasm, cutaneous rash, itching and pruritus. These symptoms may annunciate the onset of anaphylaxis (see Xf) especially if the drug is continued or the patient is inadvertenly rechallenged with the drug. Desensitization can be offered (PMID 26895621), so that patients can receive full treatment courses and need not be switched to an alternative, potentially more toxic or inferior therapy. See PMID 12634903, 12721396, 22149339, 22987983. Skin manifestations at PMID 24820798

Causative drugs

Frequency - Incidence

Incidence of cardiac adverse event(s) due to the specific drug as assessed by number of reported/published cases in the literature. Red digits in stars indicate: 0 = Very rare, questionable signal · 1 = < 10 cases · 2 = 10-50 cases · 3 = 50–100 cases · 4 = 100-200 cases · 5 = >200 cases

Evidence level/grade

Evidence level for cardiac adverse event(s) due to the specific drug as estimated using Hill’s (1965), Naranjo’s (1981), and Bégaud’s (1985) criteria applied to published cases. Blue digits in stars indicate: 0 = Questionable · 1 = Low · 2 = Moderate · 3 = Robust · 4 = Definite · 5 = Unquestionable, pathognomonic