Signs and symptoms of mastitis can appear suddenly. They may include:  Breast tenderness or warmth to the touch Breast swelling Thickening of breast tissue, or a breast lump Pain or a burning sensation continuously or while breast-feeding Skin redness, often in a wedge-shaped pattern Generally feeling ill Fever of 101 F (38.3 C) or greater 
signs symptoms mastitis can suddenly  may include:  breast tenderness warmth touch breast swelling thickening breast tissue  breast lump pain burning sensation continuously breast-feeding skin redness  wedge-shaped pattern generally feeling ill fever 101 (38 3 c) greater 
mastitis