TL;DR
- •Psychomotor agitation is excess, purposeless movement driven by inner tension — pacing, fidgeting, hand-wringing, an inability to sit still.
- •It's the flip side of psychomotor retardation (slowing) and, like it, is a recognized motor sign of a more severe mood state.¹
- •It commonly appears in agitated depression, mania or mixed states, anxiety, and as a feature of some medications or withdrawal (akathisia).
- •Agitation in depression is clinically important — it's associated with greater severity and higher risk, so it deserves prompt attention.²
- •A key distinction is akathisia (a specific medication side effect) versus agitation from the underlying condition, because the treatments differ.
- •This page describes the experience, not a diagnosis. Marked agitation — especially with despair or suicidal thoughts — warrants prompt professional help.
What this can look like
- •Pacing, unable to stay seated even when you want to rest
- •Fidgeting, hand-wringing, fiddling, or constantly shifting position
- •A wound-up inner pressure that demands movement but never discharges
- •Restlessness that interferes with sleep, conversation, or sitting through a task
- •Feeling driven and tense rather than energized or productive
Commonly associated with
This is descriptive, not diagnostic. Having this symptom doesn’t mean you have any of these conditions — only a clinician can make that determination.
Major depressive disorder
Agitated depression — restlessness and inner tension with low mood — is a more severe presentation that needs prompt care.
Active mania
Increased goal-directed activity and restlessness are core to mania and mixed states; this is a psychiatric urgency.
Generalized anxiety disorder
Restlessness and feeling "keyed up" or on edge is one of the diagnostic features of GAD.
Self-help patterns
Patterns that may complement professional treatment — not substitutes for it.
- •Use the movement — walking or rhythmic exercise can discharge some of the physical tension safely
- •Slow, paced breathing and grounding to take the edge off the arousal
- •Reduce stimulants (caffeine, nicotine) that worsen restlessness
- •Tell your prescriber if agitation began after a medication change — it may be a treatable side effect
- •Don't white-knuckle severe agitation alone — reach out, especially if despair is present
When to seek professional help
- •The agitation is severe, persistent, or escalating
- •It comes with despair, hopelessness, or thoughts of self-harm — seek help promptly (988 in the US)
- •It started or worsened after a medication change (possible akathisia)
- •It's paired with little need for sleep and unusually elevated mood or energy (possible mania)
Treatment options
Treatment targets the cause. Agitated depression is treated as a more severe depression — sometimes with a mood-stabilizing or antipsychotic adjunct, and ECT for severe cases. If mania or a mixed state is present, mood stabilizers and antipsychotics are needed urgently. If the agitation is akathisia from a medication, the answer is adjusting that medication (and sometimes adding a specific treatment for akathisia), not intensifying it. Distinguishing these — agitation versus akathisia versus mania — is the crucial first step.
Where ketamine fits
Psychomotor agitation calls for caution rather than a straightforward ketamine answer. Because marked agitation can signal a mixed or bipolar state, the priority is an accurate assessment first — ketamine is not appropriate in mania or mixed states, and an agitated, activated presentation must be screened carefully. Where agitation is part of a unipolar treatment-resistant depression, ketamine may be considered as part of treating that depression, but the activation profile must be understood before proceeding.
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Frequently asked
What causes the feeling of being unable to sit still?
Psychomotor agitation is restlessness driven by inner tension. It shows up in agitated depression, in mania or mixed states, in anxiety, and as a medication side effect called akathisia. Because the causes differ a lot, figuring out which one is key to treating it.
Is psychomotor agitation serious?
It can be a signal of a more severe state and is associated with higher risk, so it deserves prompt attention — especially if it comes with despair or suicidal thoughts (seek help immediately, 988 in the US), or with reduced need for sleep and elevated mood, which can indicate mania.
What's the difference between agitation and akathisia?
Akathisia is a specific, often medication-induced restlessness (a compelling urge to move, frequently in the legs). True akathisia is treated by adjusting the causative medication, whereas agitation from depression or mania is treated by addressing that condition. Telling them apart changes the treatment entirely.
Can ketamine help with agitation?
Not as a first move. Because agitation can signal a mixed or bipolar state — where ketamine is not appropriate — careful assessment comes first. If it's part of a unipolar treatment-resistant depression, ketamine may be considered within treating that depression, but only after the picture is clear.
References
- Schrijvers D et al. 2008, Journal of Affective Disorders. Reviews psychomotor symptoms (agitation and retardation) in depression — diagnostic, pathophysiological, and therapeutic aspects. PMID 18082896
- Luca M et al. 2026, Psychiatry Research. Agitation and anxiety features define a more severe phenotype in unipolar depression. PMID 41485399
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