My 31 month old son is walking on tippy toes lately. it's on and off. all other developmental milestones are perfect. is this a phase?

Try not to worry: Walking on the toes, is fairly common in children who beginning to walk. Most children outgrow it. Kids who continue toe walking beyond the toddler years may from habit. As long as your child is growing and developing normally, toe walking on its own is unlikely to be a cause of concern. Yet, toe walking can be a sign of cp, md, autism or another generalized muscle/nerve disease but not alone.