A 15-year-old with a 1-day history of sore throat, swollen glands, low-grade fever, rash, and node enlargement is most likely experiencing which condition?

The symptoms described—a 15-year-old with a sore throat, swollen glands, low-grade fever, rash, and node enlargement—strongly indicate Infective Mononucleosis. This viral infection is commonly caused by the Epstein-Barr virus (EBV) and is particularly prevalent among adolescents and young adults.

Infective Mononucleosis is characterized by the presence of lymphadenopathy (swollen lymph nodes), which aligns with the swollen glands mentioned in the question. The low-grade fever and sore throat are also hallmark symptoms of this condition. Additionally, a rash may occur, especially if the patient is treated with certain antibiotics, like amoxicillin, which can induce a rash in those with EBV.

While Roseola typically presents with a high fever followed by a rash, the age and symptomatology do not align as closely. Rubeolla (measles) and Rubella (German measles) usually present with a distinctive rash after other systemic symptoms, such as cough and conjunctivitis in measles, but neither aligns with the displayed symptoms of sore throat and lymphadenopathy as clearly as Infective Mononucleosis.

Thus, based on the combination of sore throat, swollen glands, low-grade fever, and