Patients with mastitis often feel pain in the breast, with localized redness, swelling, and fever. As the inflammation progresses, there can be chills, high fever, and increased pulse rate, often accompanied by swelling and tenderness of the lymph nodes on the affected side. A routine blood test can show a significant increase in white blood cells. For treatment, if there is swelling, it is recommended to stop breastfeeding and apply topical Levofloxacin. Blood tests should be checked, and if white blood cell count exceeds 10,000, intravenous antibiotics are advised. If below 10,000, oral anti-inflammatory drugs can be taken for symptomatic treatment. After three days, recheck the blood routine to decide on further symptomatic treatment.