The last few years I™ve seemed to get these little things that look like small Whiteheads under the skin. I can squeeze them and white stuff will come out and the area will bleed, sort of scab up and heal like a normal pimple would. It will stay clear and the skin will remain flat for a few weeks and then boom the same exact pimple or whatever it is will come back. Same spot, same everything. 
 

I only had one and now seem alike I have 3-4 of them. 
 

what are they and how can I get rid of them for good? Any help would be great. Thanks!