When a guitar's woods aren't humidified the wood on the neck will actually shrink and contract leaving the frets protruding out from the side of the neck. When you run your hand down the side of the neck they can actually be sharp and cut your fingers. The best way to fix this is to get a small piece of fine grit sand paper and fold it a few times so it's firm. At this point gently run it up and down the edge of the fret board. Our fret material is very soft so by simply running up and down the edge of the fret board lightly you'll smooth down those rough edges.