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It seems that you are having pain and heaviness in scrotum
and soreness over it,there could be many reasons but commonest are
2.some infection may urinary tract
or inside the scrotum itself
3.some minor injury
4.local skin infection
Try to avoid tight clothing, take some routine analgesics, for local skin soreness wear clothes that permit ventilation means cotton etc.apply some routine mosturiser,.still have problem pl.see a doctor.