Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 20, 2021
Document Information [Line Items]
Entity Central Index Key	0001289850
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		6,645,397
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Type	10-Q
Entity Current Reporting Status	Yes
Entity Small Business	true
Entity Interactive Data Current	Yes
Security Exchange Name	NASDAQ
Trading Symbol	NURO
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-33351
Entity Registrant Name	NEUROMETRIX, INC.
Entity Incorporation, State or Country Code	DE
Entity Address, Postal Zip Code	01801
Local Phone Number	890-9989
Entity Filer Category	Non-accelerated Filer
Entity Tax Identification Number	04-3308180
Entity Address, Address Line One	4B Gill Street
Entity Address, City or Town	Woburn
Entity Address, State or Province	MA
City Area Code	781
Title of 12(b) Security	Common Stock, $0.0001 par value per share