Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2022
Nov. 06, 2022
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2022  
Entity File Number 001-41429  
Entity Registrant Name ProMIS Neurosciences Inc.  
Entity Incorporation, State or Country Code Z4  
Entity Tax Identification Number 98-0647155  
Entity Address, Address Line One Suite 200, 1920 Yonge Street  
Entity Address, City or Town Toronto  
Entity Address State Or Province ON  
Entity Address, Postal Zip Code M4S 3E2  
City Area Code 416  
Local Phone Number 847-6898  
Title of 12(b) Security Common Shares, no par value per share  
Trading Symbol PMN  
Security Exchange Name NASDAQ  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   8,579,284
Entity Central Index Key 0001374339  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
Amendment Flag false