Is the Baby’s Nipple Area Hardness a Sign of Precocious Puberty?

The hardness around a baby’s nipple may be a sign of a minor puberty, typically not requiring intervention treatment. However, if there is persistent hard lump in the breast that does not regress, continues to grow, or recurs after regression, or if there are other signs of development, growth acceleration, bone age advancement, or increased levels of sex hormones, timely evaluation and treatment are necessary.
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