Is it normal for toddler to have small size hard bump under skin on forehead months after a fall? doesn't bother him.

Toddler fall: If medically cleared after the fall & has not complained of any symptoms. No worry.

Common finding: Kids often will develop a calcification under the skin at the site on the skull where the trauma was focused. It is somewhat similar to what happens to a tree if you scar its bark, it heaps up around the edges.It can take a year or so for it to disappear as the head grows bigger.