Can a pore be clogged in your armpit and make a lump?

Yes, you can get clogged pores in your armpit, like you can on your face and back. I just read this week that you can use a facial scrub with granules in it twice a week to cut down on this problem. However, be aware you have lymph nodes under your arms and should one of them become swollen, this can indicate infection somewhere and should be checked by your doctor. Lymph nodes are bigger and deeper than a pimple would be.