PT  - JOURNAL ARTICLE
AU  - Josephine B de Leoz
AU  - Devi Suravajjala
AU  - Hashmi Rafeek
AU  - Vani Selvan
TI  - Primary mammary actinomycosis challenged with penicillin allergy
AID  - 10.1136/bcr-2020-235883
DP  - 2021 Jul 01
TA  - BMJ Case Reports
PG  - e235883
VI  - 14
IP  - 7
4099  - http://casereports.bmj.com/content/14/7/e235883.short
4100  - http://casereports.bmj.com/content/14/7/e235883.full
SO  - BMJ Case Reports2021 Jul 01; 14
AB  - Actinomycosis is a subacute-to-chronic bacterial infection caused by gram-positive, filamentous, non-acid-fast, facultative anaerobic bacteria. It is a normal commensal bacterium found in the oral cavity and the lower reproductive tract of women. We present a case of primary actinomycosis of the breast. A postmenopausal woman, complicated by penicillin allergy, presented with a left breast lump clinically simulating malignancy. The first line of treatment for actinomycosis is penicillin. Due to a penicillin allergy, the patient was initially treated with doxycycline. However, doxycycline was discontinued due to tremors, and was replaced by clindamycin. The patient had a good clinical response with resolution of the abscess.