2nd August 2023

A 35 year old woman presents with fever, severe itching, and muscle and joint pains.

A 35 year old woman presents with fever, severe itching, and muscle and joint pains. She returned from Angola 5 weeks ago, where she went on holiday and partook in lake swimming and deep-water scuba diving. On examination, there is evidence of an urticarial rash with associated angioedema and marked excoriations. Blood tests show a raised eosinophil count.

What is the first line treatment for the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.