I have a ton of these things. I used to think they were inflamed and knotted muscles, but my massage therapist tells me otherwise. I have a hard time telling which lumps are lipomas and which ones are myofascial trigger points, especially since most of them are in my back, so I'm not sure if any of mine are painful.
Humidity. The most common cause of condensation on double-glazed windows is humidity. The outside window is colder than the inside window causing fog or frost to build up in-between the two panes. The window and house is extremely airtight and cannot breath.
Condensation Forms in the Center of the Glass, Inside the House. Your window is trying to tell you: You've probably got a gas leak. This can be a problem in double-pane, gas-filled windows. The gas, typically argon, leaks out from between the two panes or settles to the bottom of the window, causing the glass to bow inward. In some cases, the centers of the two panes actually touch.