1 Poison ivy, poison oak, and poison sumac are plants than can cause an itchy rash upon contact. 2  A substance called urushiol, found in these plants, causes the rash. 3  The rash is not contagious.  The rash usually disappears in one to three weeks.
Common factors that can cause clogged ears are wax buildup, air flow blockage to the Eustachian tubes, pressure differences in the middle ear, and cold and sinus problems. Clogged ears can affect people of all ages, but is most common among children, especially when they have colds.
Report Abuse. There is probably still some water left in your ear if it feels clogged, or it is swollen. Too much water/ moisture in the ear canal can irritate and break down the skin which would allow bacteria to migrate in and cause pain. Sam Naps Â· 4 years ago.