MedDRA preferred term · breast pain

Breast pain: adverse event reports recording this term

10,482 reports to FDA record it, 2004–2026; 0.1% of the database.

Read first · FDA's statement on these data

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product. openFDA, FDA

FDA adds: "There is no certainty that the reported event (adverse event or medication error) was actually due to the product. FDA does not require that a causal relationship between a product and event be proven, and reports do not always contain enough detail to properly evaluate an event." The information in these reports "cannot be used to estimate the incidence of these events."

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

10,482
reports recording the term: 0.1% of all reports; 403
reports, 12 months to June 2026: 427 in the 12 months before; 57%
marked serious by the reporter: 57.4% across all reports; 1.7%
record death among outcomes, as reported: 9.1% across all reports

10,482 reports in FDA's adverse event database record the MedDRA term "Breast pain" (in plain words, breast pain): 0.1% of all reports received between January 2004 and June 2026. Coders pick the term that best matches the reporter's description.

403 reports recorded it in the 12 months to June 2026, close to the 427 of the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Of reports recording this term, 57% are marked serious, 1.7% include death among the outcomes and 16.2% include hospitalisation, as reported.

The drugs listed most often as suspect products in those reports are Mirena, Plan B One-Step and Humira. That order mostly follows how many reports each drug has overall; the table also gives the term's share within each drug's own reports. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

Reports by month, five years

FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

Drugs listed as suspect products in these reports

Drug	Class	Reports with this term	Share of the drug's own reports
Mirena	Progestin	927	0.7%
Plan B One-Step	Progestin	684	1.9%
Humira	—	291	0%
Nexplanon	Progestin	242	0.6%
Enbrel	Tumor necrosis factor blocker	189	0%
Ibrance	Kinase inhibitor	167	0.2%
Kisqali	Kinase inhibitor	146	0.6%
Forteo	Parathyroid hormone analog	135	0.1%
Avodart	—	125	2.1%
Premarin	Estrogen	119	0.3%
Risperdal	Atypical antipsychotic	103	0.2%
Letrozole	Aromatase inhibitor	92	0.3%
Spironolactone	Aldosterone antagonist	84	0.4%
Nuvaring	Estrogen	80	0.4%
Lyrica	—	74	0.1%
Estradiol	Estrogen	73	0.5%
Herceptin	HER2/neu receptor antagonist	73	0.2%
Prolia	RANK ligand inhibitor	69	0.1%
Cosentyx	Interleukin-17A antagonist	67	0%
Fosamax	Bisphosphonate	66	0.2%
Methotrexate	Folate analog metabolic inhibitor	65	0%
Implanon	—	64	0.7%
Dupixent	Interleukin-4 receptor alpha antagonist	61	0%
Xolair	Anti-IgE	61	0.1%
Finasteride	5-alpha reductase inhibitor	60	0.4%

Drugs with a page on this site, ordered by the number of their reports recording this term. The last column is the term's share within that drug's own reports, against 0.1% across the whole database. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

By pharmacologic class

Class	Reports with this term	Share of class reports	Median drug in class
Progestin	2,043	0.7%	0.3%
Kinase inhibitor	558	0.1%	0%
Estrogen	534	0.4%	0.3%
Atypical antipsychotic	342	0.1%	0%
Tumor necrosis factor blocker	259	0%	0%
Aromatase inhibitor	256	0.4%	0.4%
HER2/neu receptor antagonist	208	0.2%	0.2%
Parathyroid hormone analog	138	0.1%	0.1%
Serotonin reuptake inhibitor	138	0.1%	0%
Aldosterone antagonist	131	0.4%	0.4%

Classes ordered by count. Class shares follow the class's overall report volume as much as anything else.

Patients in these reports

Patient age

Under 20.1%6

2 to 110.4%45

12 to 171.1%113

18 to 4425.4%2,665

45 to 6421.5%2,249

65 to 7410.5%1,096

75 and over7.5%783

Age not given33.6%3,525

Patient sex

Female82.5%8,648

Male12.7%1,329

Not given4.8%505

Grey bar: all 20,646,523 reports in the database. 62.2% of these reports give the United States as the country.

Questions about "Breast pain"

What does "Breast pain" mean in an adverse event report?

In plain language: breast pain. It is a MedDRA preferred term, the dictionary FDA uses to code what a reporter described. The report's own description is not published by openFDA and is not shown here.

How many reports record breast pain?

10,482 reports through June 2026 (0.1% of all reports), 403 of them in the latest 12 months.

Which drugs appear most often in these reports?

Mirena (927), Plan B One-Step (684), Humira (291), Nexplanon (242) and Enbrel (189). Drugs with many reports overall lead almost every term's list. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Does a drug appearing here mean it was responsible for this reaction?

No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

I have this symptom. What should I do?

This site cannot assess anyone. A pharmacist or clinician can; for an emergency, call the local emergency number. Nothing on this page is medical advice.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. Terms are pooled across spelling and capitalisation variants of one MedDRA preferred term. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.