Hi welcome to HCM I have gone thru your query regarding soreness and lump under nipple . It is a matter of concern , but not a cause of worry . For your info , 80 to 85 percent of breast lumps are benign, meaning they are noncancerous, especially in women younger than age 40 . Dear , there are many factors behind causing any problem . As is seen, that small lump with tenderness beneath the nipple is a normal part of puberty . The main cause of breast lumps is pregnancy and stress. It can be due to hormone fluctuation and fatty diet. Reproduction hormones like estrogen smoking and excess caffeine consumption. excess weight can cause of nipple lumps. - Sometimes ,Soreness and lump under nipple problems can occur in men or women, and are caused by illnesses starting in your body or irritants in your .environment. Running and sexual activity are sometimes causing temporary nipple problems due to vigorous rubbing . There are also intake of medicines prescribed for unrelated conditions that can cause breast swelling and nipple discharge . Some nipple problems can be prevented. If possible, avoid medicines that are associated with nipple problems, or ask for a change in medication if you’re already taking one. If you have hypothyroidism, stay on your prescription medicines, even if you feel better. You can prevent nipple problems when you exercise or run or ride horses by wearing properly fitting clothes .You Should wear a well-fitting sports bra. Modifying your life style and food habits can help preventing your forthcoming problems . For prevention of breast lumps, you should avoid drinks like coffee and tea. You should not take soft drinks. Do not take alcoholic drinks like wine and beer. All these drinks produce stress hormones in the body, which can lead to breast lumps formation. Use salmon fish for omega 3 & Vitamin E is a very good remedy for breast lumps and it cures pain and tenderness. You should eat foods that contain Vitamin E such as peanuts, soybeans, sunflower seeds, almonds, wheat germ, fortified cereals, dried apricots, pine nuts, green leafy vegetables, oatmeal, basil, oregano and cooked taro root, cucumber ,cabbage , red color fruit ,carrot ,ginger ,garlic , wild yam The liver detoxifies the estrogen with the help of Vitamin B6. It controls the fluid in the body. Take Lot of water and yoga , pranayam - deep breathing and meditation will help you in proper blood circulation , detoxifying your mind and body . enhancing better health All breast lumps should be evaluated by a medical professional, who will help you decide how to proceed. Most benign breast conditions are treatable, and some will even go away on their own, but it s best to let your doctor be the one to tell you that. Hope this helps solve your query Take care All the best.