Osteoarthritis, cough, sore throat, or allergies. The secretion of fluids accumulates in the middle ear. Pain in the ear and the exit of thick yellow liquid

Osteoarthritis occurs in the event of a cold, sore throat or allergies, all of which cause the secretion of fluids that accumulate in the middle ear. The most susceptible to these infections are children.
Symptoms include: ear pain, as well as thick yellow liquid.