Formication adverse event reports that record this term

Kind of term: MedDRA preferred term

What a report is

A report is not proof that the drug was the cause of the event.

FDA says:

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.
Source: openFDA, Drug Adverse Event Overview, section "Responsible use of the data". The site read the page on 2 Oct 2026. The data have the reports that FDA received through 30 Jun 2026.

FDA also says:

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 has not been scientifically or otherwise verified as to a cause and effect relationship and cannot be used to estimate the incidence of these events.
Source: openFDA, Drug Adverse Event Overview. The site read the page on 2 Oct 2026.

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.
Source: openFDA, Response of the drug event API (meta.disclaimer). The site read the page on 2 Oct 2026.

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

Reports on file

From January 2004 to June 2026, FDA received 6,869 adverse event reports that record the MedDRA preferred term Formication. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 246 reports in the 12 months to June 2026 and 240 in the 12 months before. FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

By reports in the 12 months to June 2026, this term was number 1,284 of 1,436 reaction terms with a page. Of the 1,332,454 drug reports that FDA received in the 12 months to June 2026, 246 (under 0.1%) record this term. Reports for female patients were 66.3% of the reports that record this term and 52.7% of all drug reports.

The number of people who use the product is not in the data. A count is not a rate.

MedDRA

The Medical Dictionary for Regulatory Activities. The person who codes a report selects the preferred term that agrees best with the description of the reporter. FDA does not publish the description.

Data version

openFDA FAERS release of 29 Oct 2026. Reports received through 30 Jun 2026.

Drugs in these reports

The table has the 145 drug pages with 10 or more reports that record this term. The rows are in order of name. A drug page with fewer reports for this term is not in the table. The counts are the counts that the site keeps for each reaction term, and a count can be lower than the count of FDA.

FDA says:

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.
Source: openFDA, Drug Adverse Event Overview. The site read the page on 2 Oct 2026.

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.
Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of 11 Mar 2026. The site read the page on 2 Oct 2026.

Drugs that the reports with the term Formication name as a suspect product, in order of name
Drug	Class	Reports with this term
Abilify	Atypical antipsychotic	47
Actemra	Interleukin-6 receptor antagonist	19
Alprazolam	Benzodiazepine	20
Ampyra	Potassium channel blocker	34
Aripiprazole	Atypical antipsychotic	14
Atorvastatin		13
Aubagio	Pyrimidine synthesis inhibitor	20
Avelox		19
Avonex	Interferon beta	35
Baclofen	gamma-Aminobutyric acid-ergic agonist	22
Belsomra	Orexin receptor antagonist	10
Betaferon		16
Betnovate		11
Bicalutamide	Androgen receptor inhibitor	11
Bupropion hydrochloride	Aminoketone	16
Byetta	GLP-1 receptor agonist	12
Cannabis Sativa Subsp Indica Top		14
Capecitabine	Nucleoside metabolic inhibitor	14
Caplyta	Atypical antipsychotic	22
Carboplatin	Platinum-based drug	25
Champix		12
Chantix	Partial cholinergic nicotinic agonist	79
Cipro	Corticosteroid	13
Ciprofloxacin	Fluoroquinolone antibacterial	89
Cisplatin	Platinum-based drug	15
Citalopram	Serotonin reuptake inhibitor	17
Clonazepam	Benzodiazepine	17
Cocaine		19
Codeine		14
Concerta	Central nervous system stimulant	23
Copaxone		14
Cosentyx	Interleukin-17A antagonist	26
Cotrim		11
Crestor	HMG-CoA reductase inhibitor	20
Cymbalta		142
Desvenlafaxine succinate	Serotonin and norepinephrine reuptake inhibitor	15
Diazepam	Benzodiazepine	12
Docetaxel	Microtubule inhibitor	12
Dupixent	Interleukin-4 receptor alpha antagonist	143
Duragesic-100		26
Effexor	Serotonin and norepinephrine reuptake inhibitor	24
Enbrel	Tumor necrosis factor blocker	137
Entresto	Angiotensin 2 receptor blocker	11
Enzalutamide	Androgen receptor inhibitor	13
Escitalopram	Serotonin reuptake inhibitor	28
Eumovate		11
Fentanyl	Opioid agonist	39
Fentanyl Transdermal System		31
Fentanyl-100		14
Finasteride	5-alpha reductase inhibitor	18
Fluorouracile Teva		11
Fluoxetine	Serotonin reuptake inhibitor	29
Forteo	Parathyroid hormone analog	32
Gabapentin	Anti-epileptic agent	75
Geodon	Atypical antipsychotic	13
Gilenya	Sphingosine 1-phosphate receptor modulator	23
Humira		136
Humira 40 Mg/0 8 Ml Pen		13
Hydrocortisone	Corticosteroid	17
Ibuprofen	Nonsteroidal anti-inflammatory drug	26
Incivek		18
Ingrezza	Vesicular monoamine transporter 2 inhibitor	16
Kesimpta	CD20-directed cytolytic antibody	21
Klonopin	Benzodiazepine	20
Lamictal	Anti-epileptic agent	19
Lamotrigine	Anti-epileptic agent	16
Latuda	Atypical antipsychotic	26
Lergigan		27
Levaquin		17
Levetiracetam		11
Levofloxacin	Fluoroquinolone antibacterial	33
Lipitor	HMG-CoA reductase inhibitor	11
Lyrica		239
Mabthera		16
Methotrexate	Folate analog metabolic inhibitor	24
Mirena	Progestin	110
Mirtazapine		39
Montelukast	Leukotriene receptor antagonist	17
Morphine	Opioid agonist	16
Morphine sulfate	Opioid agonist	19
Neurontin		24
Niaspan		141
Novothyrox		80
Ocrevus	CD20-directed cytolytic antibody	13
Otezla	Phosphodiesterase 4 inhibitor	15
Oxaliplatin	Platinum-based drug	30
Oxycodone	Opioid agonist	14
Oxycodone hydrochloride	Opioid agonist	36
OxyContin	Opioid agonist	64
Paclitaxel	Microtubule inhibitor	14
Paxil	Serotonin reuptake inhibitor	45
Paxlovid		10
Pegasys	Interferon alpha	36
Percocet	Opioid agonist	14
Prednisolone	Corticosteroid	10
Prednisone	Corticosteroid	33
Pregabalin		33
Prialt		10
Prolia	RANK ligand inhibitor	21
Promethazine	Phenothiazine	13
Propavan		31
Protopic		20
Quetiapine	Atypical antipsychotic	32
Rebif	Interferon beta	17
Remicade	Tumor necrosis factor blocker	26
Repatha	PCSK9 inhibitor	18
Requip		16
Revlimid	Thalidomide analog	27
Ribavirin	Nucleoside analog antiviral	39
Risperdal	Atypical antipsychotic	11
Ritalin	Central nervous system stimulant	10
Rosuvastatin	HMG-CoA reductase inhibitor	16
Sacituzumab govitecan		11
Seroquel	Atypical antipsychotic	69
Sertraline	Serotonin reuptake inhibitor	58
Simcor		36
Simponi	Tumor necrosis factor blocker	14
Simvastatin	HMG-CoA reductase inhibitor	11
Singulair	Leukotriene receptor antagonist	14
Sklice	Antiparasitic	16
Strattera	Norepinephrine reuptake inhibitor	24
Suboxone	Opioid antagonist	67
Synthroid	l-Thyroxine	11
Tecfidera		84
Topiramate		12
Tramadol		30
Tylenol	Expectorant	10
Tymlos		16
Tysabri	Integrin receptor antagonist	49
Venlafaxine	Serotonin and norepinephrine reuptake inhibitor	11
Venlafaxine hydrochloride	Serotonin and norepinephrine reuptake inhibitor	12
Vivitrol		29
Vumerity		12
Vyvanse	Central nervous system stimulant	16
Wellbutrin	Aminoketone	14
Xanax	Benzodiazepine	13
Xarelto	Factor Xa inhibitor	11
Xeljanz	Janus kinase inhibitor	20
Xeloda	Nucleoside metabolic inhibitor	15
Xolair	Anti-IgE	29
Xtandi	Androgen receptor inhibitor	14
Xyrem	Central nervous system depressant	54
Zejula	Poly(ADP-Ribose) polymerase inhibitor	14
Zoloft	Serotonin reuptake inhibitor	24
Zyrtec	Histamine-1 receptor antagonist	24

The page of each drug has the count of each reaction term in its reaction lookup.

Drug classes in these reports

The table has the 38 pharmacologic classes with 25 or more reports that record this term. The rows are in order of name.

FDA says:

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.
Source: openFDA, Drug Adverse Event Overview. The site read the page on 2 Oct 2026.

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.
Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of 11 Mar 2026. The site read the page on 2 Oct 2026.

Pharmacologic classes of the drugs that the reports with the term Formication name, in order of name
Class	Reports with this term
Aminoketone	46
Androgen receptor inhibitor	38
Anti-epileptic agent	114
Anti-IgE	38
Atypical antipsychotic	283
Benzodiazepine	100
CD20-directed cytolytic antibody	45
Central nervous system depressant	65
Central nervous system stimulant	71
Corticosteroid	112
Fluoroquinolone antibacterial	128
Folate analog metabolic inhibitor	35
gamma-Aminobutyric acid-ergic agonist	32
Histamine-1 receptor antagonist	53
HMG-CoA reductase inhibitor	67
Integrin receptor antagonist	49
Interferon alpha	36
Interferon beta	55
Interleukin-17A antagonist	26
Interleukin-4 receptor alpha antagonist	147
Janus kinase inhibitor	29
Leukotriene receptor antagonist	39
Microtubule inhibitor	35
Nonsteroidal anti-inflammatory drug	59
Nucleoside analog antiviral	39
Nucleoside metabolic inhibitor	38
Opioid agonist	255
Opioid antagonist	74
Parathyroid hormone analog	32
Partial cholinergic nicotinic agonist	79
Platinum-based drug	70
Potassium channel blocker	36
Progestin	112
RANK ligand inhibitor	27
Serotonin and norepinephrine reuptake inhibitor	74
Serotonin reuptake inhibitor	249
Thalidomide analog	36
Tumor necrosis factor blocker	197

A class with many reports in all has many reports for almost every term.

Reports by month

Reports that record Formication, by month, five years to June 2026

FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

Patients in these reports

Age of the patient in the reports that record Formication
Age	Reports	Share
Under 2	3	under 0.1%
2 to 11	109	1.6%
12 to 17	73	1.1%
18 to 44	1,393	20.3%
45 to 64	1,847	26.9%
65 to 74	718	10.5%
75 and over	322	4.7%
Age not given	2,404	35%

Sex of the patient in the reports that record Formication
Sex	Reports	Share
Female	4,552	66.3%
Male	1,851	26.9%
Unknown or not given	466	6.8%

Age and sex are as the report gives them. 67% of these reports give the United States as the country.

Terms near this one

These are the next terms in the A to Z list. The links are for navigation.

Official pages

MedWatch Online Voluntary Reporting FormThe online form of FDA for a voluntary report.
MedWatch: The FDA Safety Information and Adverse Event Reporting ProgramThe page of the FDA program that receives reports about drugs and devices.
FDA Adverse Event Monitoring System (AEMS) Public DashboardThe public dashboard of FDA for adverse event reports on drugs and biologics.

The site checked these addresses on 2 Oct 2026. The links open in a new tab.

Cite this page

Reported Reactions. Formication: adverse event reports that record this term. https://reportedreactions.com/reaction/formication/ Source: U.S. Food and Drug Administration, openFDA Drug Adverse Event (FAERS) files, release of 29 Oct 2026. Reports received through 30 Jun 2026.

Where the data come from

The counts come from the openFDA Drug Adverse Event (FAERS) bulk files, release of 29 Oct 2026. The files have the reports that FDA received through 30 Jun 2026. A drug name is the name on the report. The site matches it to a brand name or a generic name of the National Drug Code Directory of 2 Nov 2026. A class is the pharmacologic class (EPC) of the FDA label.

The count has the reports with each spelling of one MedDRA preferred term. The site does not publish a report narrative, a lot number, a detail of a patient or the identity of a reporter. The record of FDA is the authority. See how the site counts reports, the data sources and the corrections page.

Questions

What does Formication mean in an adverse event report?

It is a MedDRA preferred term. FDA codes the description of a reporter with the MedDRA dictionary. The openFDA files do not have the description itself, and this site does not show it.

Does a drug in the table mean that the drug was responsible for this reaction?

No. FDA says:

No individual drug is connected to any individual reaction.
Source: openFDA, Drug Adverse Event Overview. The site read the page on 2 Oct 2026.

When a report lists multiple drugs and multiple reactions, there is no way to conclude from the data therein that a given drug is responsible for a given reaction.
Source: openFDA, Drug Adverse Event Overview. The site read the page on 2 Oct 2026.

What does this page tell a person who has this symptom?

This page gives counts of reports. It cannot assess a person. A pharmacist or a clinician can assess a person.

If this is a medical emergency, please call 911.
Source: FDA, MedWatch Online Voluntary Reporting Form. The site read the page on 2 Oct 2026.

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