Hi, Thanks for posting in HCM. I understand your concern. The symptoms what you have been describing appears that your son is having upper respiratory tract and sinus infection. Kindly do the following to overcome them. 1. Salt water gargling with warm water thrice a day. 2. Use steam inhalation to liquefy the mucous for easy drainage. 3. Take mucolytic-decongestant medications in the form of syrup containing Ambroxyl/Bromhexine, Guaifenesin and Chlorpheniramine maleate as ingredients. 4. In case he feels feverish and body aches, he needs to take Tablet. Paracetamol with Ibuprofen combination after meals. 5. Take medicated lozenges for throat soothening effect when necessary. Strictly avoid consumption of cold items like cold drinks and ice cream. His symptoms should get better soon by adopting to above measures. Hope the information provided would be helpful. All the best.