1. Organization and Description of Business	6 Months Ended
Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
1. Organization and Description of Business	1. Organization and Description of Business Seelos Therapeutics, Inc. (together with its subsidiaries, the “Company”) is a clinical-stage biopharmaceutical company focused on achieving efficient development of products that address significant unmet needs in Central Nervous System (“CNS”) disorders and other rare disorders. The Company’s lead programs are SLS-002 for the potential treatment of acute suicidal ideation and behavior in patients with major depressive disorder (“ASIB in MDD”) and SLS-005 for the potential treatment of Amyotrophic Lateral Sclerosis (“ALS”) and Spinocerebellar Ataxia (“SCA”). SLS-005 for the potential treatment of Sanfilippo Syndrome currently requires additional natural history data, which is being considered. Additionally, the Company is developing several preclinical programs, most of which have well-defined mechanisms of action, including: SLS-004, SLS-006, SLS-007 for the potential treatment of Parkinson’s Disease (“PD”) and SLS-008, which is being developed for the potential treatment of an undisclosed indication, but may also be targeted at chronic inflammation in asthma and orphan indications such as pediatric esophagitis.

1. Organization and Description of Business

6 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Organization and Description of Business

1. Organization and Description of Business

Seelos Therapeutics, Inc. (together with its subsidiaries, the “Company”) is a clinical-stage biopharmaceutical company focused on achieving efficient development of products that address significant unmet needs in Central Nervous System (“CNS”) disorders and other rare disorders. The Company’s lead programs are SLS-002 for the potential treatment of acute suicidal ideation and behavior in patients with major depressive disorder (“ASIB in MDD”) and SLS-005 for the potential treatment of Amyotrophic Lateral Sclerosis (“ALS”) and Spinocerebellar Ataxia (“SCA”). SLS-005 for the potential treatment of Sanfilippo Syndrome currently requires additional natural history data, which is being considered. Additionally, the Company is developing several preclinical programs, most of which have well-defined mechanisms of action, including: SLS-004, SLS-006, SLS-007 for the potential treatment of Parkinson’s Disease (“PD”) and SLS-008, which is being developed for the potential treatment of an undisclosed indication, but may also be targeted at chronic inflammation in asthma and orphan indications such as pediatric esophagitis.