What an Allergy??

can anyone tell me, in history, she has an allergic with paracetamol, and before she said that she's felt pain in her head, and take ketorolac tablet, but her body gave an reaction by oedem lacrymale, and after that she take a dexamethasone tablet for antidot, but her body gave an reaction too and make oedem at both of palpebra ,,, What is the real situation is happen?and what an good antidot for her? sory if my english isn't good 😂