Have a lump on back side of head and one more at the base of my neck.they are a little red and tender to the touch.making neck sore also.

Seek evaluation.: Any neck soreness from a "lump" needs an evaluation. The timing of the evaluation is based on the speed at which the symptoms are developing. If the symptoms are new and progressing over a day or two, or if there is a fever or stiffness in the neck, please seek care asap. If the progression is slower, you can consider a primary care provider or pharmacy based nurse practitioner evaluation.