Absence of fever

Warmth of the breast

Edema involving more than two-thirds of the breast

Skin thickening or peau d’orange

Ridges dividing areas of induration and more normal areas of skin

Diffuse firmness on palpation

Might or might not be an underlying mass

Might be axillary adenopathy

Mottled erythema over at least one-third of the breast

Affected breast is often “heavier” than the unaffected breast

Breast enlargement

Sensation of heat, possibly tenderness

Rapid onset and progression