A Sudden Lump on Your Child’s Eyelid? What Parents Should Know

It may take several weeks to disappear, though warm compresses can help.

3. Milia
Milia are tiny, harmless cysts that often appear around the eyes in infants and children.

What they look like
Very small white bumps
Firm and pearly
Usually painless
Not inflamed
Why they happen
Milia form when dead skin cells become trapped under the skin.

Typical course
They usually disappear on their own within weeks or months.

4. Insect Bite or Allergic Reaction
Sometimes eyelid swelling is caused by something simple like a mosquito bite or mild allergy.

What it looks like
Soft swelling
Itching
Mild redness
Typical course
Swelling usually improves within 24–48 hours.

5. Preseptal Cellulitis (Less Common)
This condition is less common but requires medical attention.

What it is
A bacterial infection affecting the eyelid tissue.

Symptoms may include
Redness and warmth of the eyelid