Just discovered this in my son’s hair. What is it? Not sure if we should go to doc

Egg
Slow cooker
Salsa
spice
Slow Cooker
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Open sores, pus, or yellow crust (sign of impetigo or infection)
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Eggs
spice
Science
Slow cooker
Slow Cooker
Egg
Salsa
Spice
Swollen lymph nodes on the neck
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Slow cooker
spice
Science
Egg
Spice
Slow Cooker
Eggs
Salsa
Fever along with scalp irritation
You’re unsure after checking—better safe than sorry!
 What You Can Do Right Now:
Take a clear photo in good lighting (close-up of the hair shaft).
Try the “flick test”: Nits won’t slide off the hair; dandruff or residue will.
Check other family members—lice spread quickly.
Avoid sharing hats, brushes, or towels until you know what it is.