What could cause painful, swollen lymph nodes in neck?

Inflammation in H&N: Painful swollen nodes an indication of an inflammatory process in the H&N area. If the nodes are high in the posterior neck region, examine the scalp for an infection. If in anterior triangle mid neck one should do endoscopy to see if lesion in area of larynx or cords . In supraclavicular area, inflammation apex of lung can cause the problem and chest X ray can help. Bx if necessary.