why i have a lymph node under my chin

Hello,
Thank you for your question.
our dear customer

What are the causes of palpable lymph node under chin?

Infection
Cancer
Cysts and benign tumors
Salivary gland stones
Food allergy
Goiter

When you should see a doctor?

The lymph node is growing fast
Present for more than 2 weeks
Dose not respond to treatment
Hard
Dose not move
Unexplained weight loss
Fever
Night sweats

What are the required investigation?

Clinical examination
Ultrasound
Head and neck x-ray
Complete blood count

What is the management of lymph node?

Use antibiotics as Augmentin
Use pain killers if needed as acetaminophen
Biopsy if needed or suspected cancer
Good hydration
Adequate nutrition
Feel free to message me anytime if you have any other questions.
Warm Regard
khaled jaber