Hi and thanks for the query, There is a generalized inflammatory reactions going on in the upper respiratory tract of the child. Viruses can as well cause all these symptoms, and a viral origin is even more probable in this case. Treatment in case is mainly symptomatic. The airways should be freed with the use of Saline, local anti histamines could reduce nasal secretions but should be well supervised. Non steroidal anti inflammatory drugs would help in reducing the fever, inflammation of the gums and controlling pain. Persistence of these initial symptoms might require a complete blood count to document other infection other Strept or ascertain the gravity of the disease. See primary care doctor for management plan. Kind regards