Chunks of nipple tip missing and rubbing out! Can it be fixed? (Photo)

nodules of nipple chunks stopped forming When I was small it dry(i think was hyperkeratosis)I would pick them.Until last yearit would grow nodules but they were so soft that the slightest graze would rub the growing nodule outI would try to keep the small pieces in but they would turn black.There is still feeling in it, the chunks never able to form together and that's why they would rub out. Theres nopain but slight soreness.Sides are active, height normal but the tip is clearly cratered out.

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