Itchy ears and sore throat and dry plugged nose what is this?

Probable allergies. Itchy ears could be caused by wax or eczema. Sometimes there is no obvious reason. Prescribed cortisone drops usually are very effective. Sore throat and congested nose could be caused by viruses, bacterias and allergies. Allergies are very common. Tx try Claritin (loratadine) or allegra, but no decongestant like claritin-d/afrin/allegra-d. Decongestants can elevate blood pressure, cause racing heart/insomnia.