Mastitis puerperalis (mastitis in the puerperium)
Skin and subcutaneous (L00-L99).
- Allergies (personal care, cosmetics, jewelry).
- Atopic eczema (neurodermatitis)
- Dermatoses (including psoriasis, herpes zoster, herpes simplex, urticaria, acne, borrelia).
- Lupus erythematosus cutaneus
- Scleroderma
Infectious and parasitic diseases (A00-B99).
- Erysipelas – nonpurulent infection of the skin and subcutaneous tissue caused predominantly by group A ß-hemolytic streptococci (GAS (group A streptococci); Streptococcus pyogenes).
Musculoskeletal system and connective tissue (M00-M99).
- Dermatomyositis (DM) – inflammatory muscle disease (myositis) that also affects the skin (dermatitis).
Neoplasms – tumor diseases (C00-D48).
- Inflammatory breast carcinoma (“inflammatory” breast cancer) – age median 47-57 years, incidence: 1-6% of all breast carcinomas; axillary lymph node involvement at time of initial diagnosis 90%.
- Leukemia with leukemic infiltration of the skin.
- Paget’s disease – 2% of all breast carcinomas/intradermal manifestation, invasion rate 33%.
- Paraneoplastic dermatosis – skin lesions associated with malignancy (“malignant tumor”) of internal organs in >50% of cases.
Mastitis non-puerperalis (inflammation of the mammary glands outside pregnancy or the puerperium)
Skin and subcutaneous (L00-L99).
- Miscellaneous dermatologic conditions (analogous to mastitis puerperalis).
Neoplasms – tumor diseases (C00-D48).
- Inflammatory breast carcinoma (breast cancer).
Genitourinary system (N00-N99)
- Concomitant mastitis
- Granulomatous mastitis
- Plasma cell mastitis
- Specific mastitis
