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.
In homes, it might occur on surfaces such as windows, bathroom walls and cold-water pipes. When interior humidity levels are too high relative to cooler outdoor temperatures, condensation can form on the coldest surface in a room â often the glass in a window or door. While windows and doors do not cause condensation, they may be one of the first places it shows up.