These tests have no value and should not be performed on patients with a history of severe non IgE-mediated reaction to BL, such as hepatitis, nephritis, SJS, TEN, and severe exfoliative dermatitis.(38)Table 1 shows the concentrations recommended for the cutaneous tests (prick and intradermal) with BL. Here, IGHE is linked to Schwartz-Jampel syndrome.