Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2019
Jan. 24, 2020
Jun. 30, 2019
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
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    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 3,893,251
Trading Symbol NURO    
Entity Common Stock, Shares Outstanding   1,400,674  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   41,627