Site Drainage area Common causes Less common causes Cervical Head, neck, oropharynx Acute: Viral URI Lymphadenitis (bacterial, viral) Pharyngitis Oropharyngeal infections EBV Chronic: EBV, CMV Catscratch disease Nontuberculous mycobacterium (NTM) lymphadenitis Acute: Kawasaki disease Chronic: Malignancy (lymphoma, neuroblastoma, leukemia) Tularemia Toxoplasmosis Sarcoid Tuberculous lymphadenitis Histiocytosis (Langerhans cell histiocytosis, Rosai–Dorfman disease) Autoimmune lymphoproliferative syndrome (ALPS) Periodic fever, aphthous stomatitis, pharyngitis, cervical adenitis syndrome (PFAPA) Kikuchi–Fujimoto disease, Kimura disease Submental Lower lip, gums, teeth, and floor of mouth Submandibular Cheeks, buccal mucosa, lips, gums, teeth Dental caries/infections Gingivostomatitis Dental caries/infections Gingivostomatitis Chronically cracked/dry lips Anterior Anterior/temporal Conjunctivitis auricular scalp, anterior ear (viral/bacterial) (preauricular) canal, lateral Oculoglandular syndrome of