Is sudden breast redness and warmth after cancer treatment normal?

That sounds really concerning and understandably frightening given your history. Sudden redness and warmth can have various causes, and it's important to contact your oncologist or healthcare team right away to have this evaluated properly. Many community members have shared similar worries about new symptoms after treatment, and getting prompt medical attention is always the right approach for any changes that concern you.

Eileen, yes I do have Inflammatory BC, discovered when I felt a rock hard lymph node under my armpit, prior to that just alot of itchy skin and the affected breast was enlarged and warm. You need to get a mammogram, yesterday. Prayers up for you