Document And Entity Information - shares
9 Months Ended
Sep. 30, 2019
Oct. 11, 2019
Document And Entity Information [Abstract]    
Entity Registrant Name NeuroMetrix, Inc.  
Entity File Number 001-33351  
Entity Tax Identification Number 043308180  
Entity Address, Address Line One 4B Gill Street  
Entity Address, City or Town Woburn  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01801  
City Area Code 781  
Local Phone Number 890-9989  
Entity Central Index Key 0001289850  
Trading Symbol NURO  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Document Type 10-Q  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   9,781,755
Class of Warrant or Right, Outstanding   416,275