WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms lump or bulge, muscle cramps or spasms (painful) (upper arm (bicep)), muscle cramps or spasms (painful) (fingers) and muscle twitching (painless) including Hypocalcemia, Muscle strain, and Low potassium (hypokalemia).
What causes condensation in AC ducts? A: Condensation in AC ducts can be caused by improperly sealed openings or a lack of proper insulation around the AC duct. Condensation occurs when the outer portion of the duct work is cooled down and comes into contact with warmer air, according to Ace Plumbing.
Condensation occurs when cold air meets warmer air. Humidity in the warm air collects on cold surfaces. Cold water inside some plumbing fixtures cools pipes and toilet tanks, causing condensation on the outside surfaces of these fixtures. A barrier between cold fixtures and warm air prevents condensation. Foam and polystyrene products provide the solution.