First-line treatment
also known as First-line, second-line, third-line
Medically reviewed by the Shrinkopedia editorial team, led by Shariq Refai, MD, MBA, FAPA.
1 min read · 158 words
- Medically reviewed . Reviewed by a board-certified psychiatrist before publication.
- Sourced from primary literature . DSM-5-TR, NICE, the American Psychiatric Association, the NIMH, Cochrane, peer-reviewed research.
- Dated and kept current . Every entry shows when it was published, reviewed, and last updated.
- Honest about uncertainty . Each entry carries an evidence-strength rating and a "what we know and what we don't" section.
- Independent . No advertising, no affiliate revenue, no sponsored content.
First-line is the treatment that guidelines recommend a clinician start with, when no specific reason exists to start elsewhere. It's not the same as "the best treatment" or "the only treatment that works." It reflects a weighted balance of evidence strength, effect size, side-effect burden, and cost, applied to the average patient. Individual patients may need something else based on their history.
Where this term appears in Shrinkopedia
First-line recommendations are named in every treatment section and in the at-a-glance panels on cluster pages. Examples:
- MDD: CBT/IPT/behavioral activation OR an SSRI/SNRI
- GAD: CBT OR an SSRI/SNRI
- OCD: exposure and response prevention (ERP) OR a high-dose SSRI
- Bipolar mania: mood stabilizer plus an atypical antipsychotic
- PTSD: trauma-focused psychotherapy (PE, CPT, EMDR)
For the plain-language definition of the word itself, see first-line on Shrinktionary, the network's canonical language layer.
Read how Shrinkopedia builds and reviews its content.
How to cite this page
- Short
First-line treatment. Shrinkopedia, medically reviewed by Shariq Refai, MD, MBA. https://shrinkopedia.com/terms/first-line/- APA
Shrinkopedia. (2026, July 11). First-line treatment. Medically reviewed by Shariq Refai, MD, MBA. https://shrinkopedia.com/terms/first-line/- MLA
"First-line treatment." Shrinkopedia, 11 July 2026, https://shrinkopedia.com/terms/first-line/.
Click a citation to select it.
See where this fits in the Atlas: how your mind works →
Walk the connection from this entry outward.
- 1 TERM First-line treatment (current)
The Knowledge Path is a curated walk. Every step is one decision away from the next.
You are here: Shrinkopedia, the concept layer of The Shrink Network.
Understand the idea here first, then follow it to the property that takes it further.
Read a related concept →Want to understand more first?