My around 3 year old son has been constantly getting fever in the evenings. He has conjunctivitis last week but got cured. However the fever although subsides during the day recurs in the night always above 100.4. He also suffers from febrile seizures at times so we have to give him Frisium tabs every time with crocin syrup. Although the doctor says his chest is clear but he is constantly coughing especially during the night and also has running nose. Due to all this he is loosing weight and his under eye space is getting blackened as well. Please help.