4 doctors weighed in:

What cause lymph nodes to enlarge behind a toddler's ear?

4 doctors weighed in
Dr. James Ferguson
Pediatrics
2 doctors agree

In brief: All sorts of things

This can mean something as simple as a bug bite near the area or local skin irritation to a body reaction to a vaccination.
The nodes in the neck and around the back of the skull are not buried in tissue like they are in the rest of the body, so they are easily noticed.They are the bodies serum cleaners and react when stimulated.They grow and become sensitive when working and shrink as they finish

In brief: All sorts of things

This can mean something as simple as a bug bite near the area or local skin irritation to a body reaction to a vaccination.
The nodes in the neck and around the back of the skull are not buried in tissue like they are in the rest of the body, so they are easily noticed.They are the bodies serum cleaners and react when stimulated.They grow and become sensitive when working and shrink as they finish
Dr. James Ferguson
Dr. James Ferguson
Thank
Dr. Martin Raff
Internal Medicine - Infectious Disease

In brief: Inflammation

Lymph nodes enlarge when they are fighting an inflammatory area which is in the region of the node.
Your toddler may have had a cold, a slight cut, or any other form of irritation leading to inflammation. If it gets increasingly larger, tender, hot, red, new nodes develop, see your doctor.

In brief: Inflammation

Lymph nodes enlarge when they are fighting an inflammatory area which is in the region of the node.
Your toddler may have had a cold, a slight cut, or any other form of irritation leading to inflammation. If it gets increasingly larger, tender, hot, red, new nodes develop, see your doctor.
Dr. Martin Raff
Dr. Martin Raff
Thank
Get help from a real doctor now
Dr. Cindy Juster
Board Certified, Pediatrics
32 years in practice
2M people helped
Continue
108,000 doctors available
Read more answers from doctors