MSFinals-2143

A 35-year-old female patient complains of painful genital ulcers, accompanied by feelings of being unwell, feverish, headache, and muscle pains. She had engaged in unprotected sexual activity with a casual male partner two weeks prior to the onset of symptoms. Upon examination, multiple shallow ulcers are observed on her vulva, along with mildly tender muscles and a low-grade fever. What is the most probable diagnosis?