Awasome Ingrown Hair Armpit Lump References. If you feel your blade pulling at your hair or if it feels rough on your skin, it is most likely dull and should be replaced. In rare cases, an armpit lump can be a sign of cancer.
Web ingrown hairs can happen anywhere, including your armpit. An ingrown hair occurs when the hair grows back into your skin, causing the area to become red, swollen and itchy. More often, they’re due to irritation, blockages or injuries affecting:
