Welcome to health care magic.
1.The history and localisation of the lumps / lesions suggest most possible cause could be hair
follicle infection with collection within, and next possible cause is
allergic reaction due to the
duo - but they could be small and superficial.
2.Other possible cause could be
lymph nodal enlargement - which is seen after any infection / inflammation it can be localised or systemic.
3.Mean while as a remedy - do not squeeze, press,scratch the lesions / lumps ( as it will only complicate the area), do not shave or apply any after shave liquids - which can be local irritants dealt healing, use trimmer instead for
hair removal until complete healing.
4.Maintain local hygiene clean the area with antiseptic liquid, use soft clothing which touches that area.
5.Get a general appointment and get examined and treated, as in infective cases a course of antibiotics will be needed. Good luck.
Hope i have answered your query,
any thing to ask do not hesitate to ask.
http://doctor.healthcaremagic.com/doctors/dr-ganesh/62888