Cover	Jun. 09, 2022
Cover [Abstract]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Jun. 09, 2022
Entity File Number	1-13738
Entity Registrant Name	PSYCHEMEDICS CORPORATION
Entity Central Index Key	0000806517
Entity Tax Identification Number	58-1701987
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	289 Great Road
Entity Address, City or Town	Acton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01720
City Area Code	978
Local Phone Number	206-8220
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common stock. $0.005 par value
Trading Symbol	PMD
Security Exchange Name	NASDAQ
Entity Emerging Growth Company	false