Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 15, 2023	Jun. 30, 2022
Document Information [Line Items]
Entity Central Index Key	0000806517
Entity Registrant Name	PSYCHEMEDICS CORP
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	1-13738
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	58-1701987
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
Title of 12(b) Security	Common stock. $0.005 par value
Trading Symbol	PMD
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	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 26,900,000
Entity Common Stock, Shares Outstanding		5,684,647
Auditor Firm ID	243
Auditor Name	BDO USA, LLP
Auditor Location	Boston, Massachusetts