Keywords: CLS, capillary leak syndrome; IVIG, intravenous immunoglobulin; PNP, paraneoplastic pemphigus; Stevens-Johnson syndrome; TEC, toxic erythema of chemotherapy; TEN, toxic epidermal necrolysis; aGVHD, acute graft-versus-host disease; acute graft-versus-host disease; capillary leak syndrome; drug reactions; oncology; paraneoplastic pemphigus; toxic epidermal necrolysis; toxic erythema of chemotherapy.