 Radiation therapy RT has been a component of breast cancer treatment for almost 100 years. Although initially used for the treatment of chest wall recurrences after mastectomy and for advanced inoperable disease, RT has evolved into a critical component of early therapy for women with an intact breast following lumpectomy and for mastectomized women who are at high risk for local failure. Currently breast cancer patients need a multidisciplinary management including surgery, chemotherapy and radiotherapy, radiotherapy has a significant role in loco regional control of the disease. It is estimated that 87 of these women will develop some degree of radiation-induced dermatitis, varying from mild to brisk erythema or even moist desquamation. 