I would reference the ball python care sheet resource and make sure your "husbandry" is accurate. Temps, humidity, hides, etc... I use a humidity induction system during the winter. I live in Michigan so my furnace has a built in de-humidifier. I supply humidity into the room my snakes are kept in. Sometimes, if needed, during a shed phase, I deeply moisten a hand towel, heat in the microwave for a minute and place over the screen lid opposite of a heat lamp, leaving a small airspace in between. This helps...bumps my humidity to about 70-73% during a shed. Too much humidity can cause respiratory issues and other problems, too little is bad husbandry! I only increase humidity during a "bad or poor shed phase"