Lymphadenitis is an inflammatory condition of lymph nodes caused by bacterial, viral, or other pathogens, usually secondary to infections of the skin, mouth, or respiratory tract. Common manifestations include: Enlarged lymph nodesNodes range from pea- to bean-sized or larger, feel firm or rubbery, and are well-defined in acute stages; chronic nodes may be slightly adherent . Pain and tendernessMost prominent in acute phase; palpation, head turning, arm lifting, or chewing can aggravate discomfort . Skin changesOverlying skin becomes red, warm, and edematous; severe cases mimic cellulitis . Fluctuation and abscess formationCentral necrosis liquefies, producing a fluid-filled cavity with throbbing pain... Learn more