For the last 3 weeks, in my neck, my lymph nodes feel swollen. They are not squishy but hard, and they are not big, probably between 1-2 cm. I am not sick at all and all I have had is an occasional stuffy nose. In the back of my head as well is a bump that should be there called the occiput but that lately seems to be itchy and swollen as well. I'm only 16 and is their a chance that could be lymphoma or a brain tumor or is this normal and caused by a stuffy nose or allergies and sneezing throughout my area.