I have a red lump on my waistline. It is slightly larger than a pea and is very painful. It turns white when I press on it. Its right where my underwear band sits. Its not the first time I have gotten this kind of lump in this same place. It comes and goes.
HI. These are the lumps, caused most probably due to a skin reaction to the elastic in your underwear. Stop using such underwear with elastics. Avoidance is the right treatment. They may vanish without any medicines. IF still persists after 3 days you may have to take anti-allergic tablets.