ballooning - refers to the expression: action and effect of bulge or bulge is, begin to corrupt a thing -
Discomfort in the head. It is not exactly pain. It can provoke him closure. A long, strong noise. The lack of renewed air. The cigarette smoke. It is dizziness, accompanied of nausea.
Action of curving outwards giving convex shape: moisture has caused the swelling of the wood.