1 'Growing pains' are pains or aches that come and go, usually in the muscles of the calves and thighs, or behind the knees, or occasionally in the arms-but not in the joints.2  They usually do not happen every night. 'Growing pains' are pains or aches that come and go, usually in the muscles of the calves and thighs, or behind the knees, or occasionally in the arms-but not in the joints.
What Are Eustachian Tubes? According to WebMD, âThe Eustachian tubes connect the middle ears to the back of the throat. The tubes help the ears drain fluid. They also keep air pressure in the ears at the right level. When you swallow or yawn, the tubes open briefly to let air in to make the pressure in the middle ears equal to the pressure outside of the ears. Sometimes fluid or negative pressure gets stuck in the middle ear. The pressure outside the ear gets too high. This causes ear pain and sometimes trouble hearing,â resulting in something known as Eustachian Tube Dysfunction.
The function of the eustachian tubes is to drain fluid from the middle ear into the throat and also to equalize the pressure behind the ear drum. Sometimes, the eustachian tubes become inflamed and do not function properly. The most common cause of eustachian tube dysfunction is a viral infection like the common cold. Other causes include throat infections, nasal allergies, and chronic sinus congestion. With eustachian tube dysfunction, fluid may collect in the middle ear because it cannot drain properly. Then, with a yawn or chewing motion, or other maneuver that opens the tube temporarily, the liquid and pressure may suddenly be relieved, leading to the popping sensation.