funny little lumps at base of 3 year old's neck?

Does anyone know anything about some funny little lumps/bumps at the base of my 3 year old's neck (on the sides)? They seem to come and go, and I noticed recently that another child I babysit for (less than a year old) also has them. I started reading a post somewhere on the net that referred to them as "Grandma's wax [something or others]." I lost the page, and since I don't know how I got to it in the first place, I can't get back! My son is unvaccinated and has been largely quite healthy. He doesn't eat junk food except for an occasional McDonald's hamburger, and he never gets corn syrup or any soda. We have had a hard time finding a naturally health conscious MD in South Florida, so I have hesitated to drag him into someone who might tell me he needs something radical like pharmaceuticals or surgery when he doesn't. Appreciate anyone weighing in on this. Tweet