My 2 year old has had a fever on and off at 101.1 some days. then 99.5-100.00 others. no symptoms except for occasional dry cough at night. thought?

Exam: If your 2 year old has been febrile for longer than 5 days and if there are other symptoms, an exam hopefully will find the focus. All the best.

Mgt: If these symptoms have persisted for three weeks or longer, or are worsening, I would suggest having a pulmonology evaluation. A virtual appointment may be booked online. There may be a persistent infection affecting the respiratory tract. A chest radiograph may be obtained at that time.