What is a sign of mastitis?

A warm, red, sensitive area on one breast is a classic sign of mastitis, which is an inflammation of breast tissue often due to infection. This condition typically occurs in breastfeeding women and can present with symptoms such as localized warmth, redness, swelling, and pain. The inflammatory response leads to these observable physical changes in the breast, making it a clear indicator of mastitis.

Other signs of infection might include fever or chills, but the distinct localized symptoms—warmth, redness, and sensitivity—are primary identifiers that clinicians look for when diagnosing mastitis. This localized inflammation typically does not occur in the other conditions mentioned, which are unrelated to mastitis. Severe abdominal cramping is associated with gastrointestinal issues or menstrual cycles, loss of appetite may result from a variety of health concerns, and increased milk production is often a sign of effective breastfeeding rather than an indication of mastitis.