Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Mar. 08, 2023
Feb. 06, 2023
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2022    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Current Fiscal Year End Date --12-31    
Entity File Number 001-41429    
Entity Registrant Name PROMIS NEUROSCIENCES INC.    
Entity Central Index Key 0001374339    
Entity Tax Identification Number 98-0647155    
Entity Incorporation, State or Country Code Z4    
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 Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Elected Not To Use the Extended Transition Period false    
Entity Shell Company false    
Entity Public Float     $ 36.1
Entity Common Stock, Shares Outstanding   8,579,284  
ICFR Auditor Attestation Flag false    
Auditor Name Baker Tilly US, LLP    
Auditor Location Tewksbury, Massachusetts    
Auditor Firm ID 23