Toe walking or walking on the ball of the foot can be common in children who are learning how to walk. However, most children outgrow toe walking by two years old. Those who continue toe walking after age two may have formed the habit of toe walking known as idiopathic toe walking. However toe walking can also indicate other more serious conditions. You should watch your child for symptoms or signs of underlying condition such as cerebral palsy, autism, short Achilles tendon, or developmental disorders.