DIGFAST: the manic episode mnemonic explained

In this article▾

1. What does DIGFAST stand for?
2. The seven DIGFAST symptoms
3. How many DIGFAST symptoms are needed for mania?
4. The one-week manic episode criterion
5. DIGFAST and hypomania: where is the boundary?
6. A practical way to remember the criteria
7. DIGFAST does not diagnose bipolar disorder
8. DIGFAST documentation example
9. Common DIGFAST mistakes
10. DIGFAST vs. SIGECAPS
11. DIGFAST quick reference
12. Frequently asked questions about DIGFAST
13. Final takeaway
14. Sources

DIGFAST is a mnemonic clinicians use to remember the seven symptom domains associated with a manic episode: Distractibility, Indiscretion or impulsivity, Grandiosity, Flight of ideas, increased Activity, decreased need for Sleep, and Talkativeness.

The mnemonic helps recall the symptom list, but it does not replace the DSM-5-TR criteria. A manic episode also requires a distinct period of elevated, expansive, or irritable mood with increased energy or activity, the required symptom count, and the applicable duration and severity criteria.

For mania, the episode generally lasts at least one week, unless hospitalization is necessary. This duration criterion is an important distinction from hypomania, which requires at least four consecutive days.

What does DIGFAST stand for?

Different versions use slightly different wording. The I may be described as impulsivity or indiscretion, and the A may be written as increased goal-directed activity or as psychomotor agitation. The underlying symptom domains are the same.

The seven DIGFAST symptoms

D: Distractibility

The patient has difficulty maintaining attention because external stimuli or irrelevant thoughts easily pull attention away.

It may appear as:

• Frequently changing topics
• Losing the thread of a conversation
• Becoming preoccupied with minor environmental stimuli
• Difficulty completing tasks because attention shifts rapidly

I: Indiscretion or impulsivity

The I refers to excessive involvement in pleasurable activities with a high potential for painful consequences.

Examples include:

• Unrestrained spending
• Reckless driving
• Sexual indiscretions
• Foolish business or financial decisions
• Other unusually risky activities

G: Grandiosity

Grandiosity refers to inflated self-esteem or grandiose ideas.

A patient may describe:

• Unusual abilities or talents
• Exceptional intelligence or importance
• Special powers or status
• Unrealistic professional or financial plans
• An exaggerated sense of certainty about future success

F: Flight of ideas

Flight of ideas involves rapid shifts in thought or a subjective experience that thoughts are racing.

During an interview, the clinician may notice:

• Rapid transitions between topics
• Associations that become increasingly difficult to follow
• Speech that is difficult to redirect
• A subjective report of racing thoughts

A: Increased activity

The A refers primarily to increased goal-directed activity or psychomotor agitation.

Increased goal-directed activity may occur in:

• Work
• School
• Social activity
• Sexual activity
• Creative projects
• Business or financial ventures

Psychomotor agitation can also satisfy this symptom domain.

S: Decreased need for sleep

This is more precisely decreased need for sleep, not simply insomnia.

A patient may sleep substantially less than usual while reporting that they feel rested or unusually energetic.

For example:

"I've been sleeping three hours a night for the last week, but I don't feel tired at all."

That differs from insomnia in which the patient sleeps poorly and feels tired or distressed by the lack of sleep.

T: Talkativeness

The T represents being more talkative than usual or experiencing pressure to keep talking.

The patient may:

• Speak much more than their baseline
• Speak rapidly
• Be difficult to interrupt
• Continue talking despite attempts to redirect
• Shift topics quickly

Pressured speech and flight of ideas can occur together, but they represent different symptom domains.

How many DIGFAST symptoms are needed for mania?

The manic episode criteria require three or more of the seven symptom domains. The American Psychiatric Association puts it as a period of at least one week when a person is extremely high-spirited or irritable most of the day, most days, possesses more energy than usual, and experiences at least three of the listed changes in behavior.

When the mood is only irritable, rather than elevated or expansive, four symptoms are required.

The symptom count is only one part of the assessment. The clinician must also establish the required mood and energy or activity change, duration, severity, functional consequences, and exclusions.

Sources: American Psychiatric Association: what are bipolar disorders?

The one-week manic episode criterion

The distinct period of elevated, expansive, or irritable mood with increased energy or activity must last:

At least 1 week

or

Any duration if hospitalization is necessary.

For example, a patient with five days of severe manic symptoms who requires psychiatric hospitalization can meet the duration criterion despite not reaching seven days.

DIGFAST and hypomania: where is the boundary?

Hypomania involves the same general symptom domains but has a different duration and severity threshold.

A hypomanic episode requires a distinct period of persistently elevated, expansive, or irritable mood and increased activity or energy lasting at least four consecutive days.

If psychotic features occur during an otherwise hypomanic presentation, the episode is considered manic.

Sources: American Psychiatric Association: what are bipolar disorders?

A practical way to remember the criteria

For a clinical interview, use DIGFAST to identify the symptoms, then check the episode requirements. If you are structuring the history itself, OLDCARTS covers onset, duration, timing and severity, which are exactly the elements the episode criteria turn on:

1. Mood: Is there a distinct change to elevated, expansive, or irritable mood?
2. Energy/activity: Is there increased energy or activity?
3. Symptoms: Are at least 3 DIGFAST symptoms present, or 4 when mood is only irritable?
4. Duration/severity: Has the episode lasted at least one week, or was hospitalization necessary?
5. Differential: Could a substance, medication, medical condition, or another psychiatric condition explain the presentation?

This keeps the mnemonic separate from the broader diagnostic assessment.

DIGFAST does not diagnose bipolar disorder

DIGFAST is a memory aid, not a diagnostic instrument.

A DIGFAST-positive presentation can occur in different clinical contexts. Substance-related presentations are a common one, and our substance use disorder ICD-10 guide covers how those get coded once established. The assessment should consider:

• Substance or medication effects
• Medical conditions
• Sleep deprivation
• Other psychiatric disorders
• Baseline personality and functioning
• Previous mood episodes
• Psychotic symptoms
• Functional consequences
• Longitudinal course

A manic episode is the defining episode requirement for Bipolar I disorder. A person does not need a major depressive episode to meet the diagnostic definition of Bipolar I.

DIGFAST documentation example

A useful clinical note should document more than "DIGFAST positive."

Patient reports a distinct 8-day period of markedly elevated and irritable mood with increased energy and activity, representing a clear change from baseline. During this period, patient reported sleeping approximately 3 hours nightly without daytime fatigue, increased goal-directed activity, pressured and increased speech, racing thoughts, distractibility, inflated self-confidence, and impulsive spending. Symptoms resulted in marked occupational and interpersonal impairment. No substance or medication explanation identified based on current assessment.

This captures the episode's duration, change from baseline, symptoms, functional impact, and differential considerations.

Common DIGFAST mistakes

1. Treating DIGFAST as the diagnostic criteria

Use the mnemonic to recall symptoms, then assess the full episode criteria.

2. Forgetting increased energy or activity

The manic episode involves a distinct mood change and increased energy or activity.

3. Treating seven days as an absolute requirement

A manic episode can meet the duration criterion at any duration when hospitalization is necessary.

4. Confusing insomnia with decreased need for sleep

Sleeping less because of insomnia is different from sleeping less while feeling rested and energized.

5. Forgetting the irritable-mood rule

When mood is only irritable, four symptoms are required rather than three.

6. Missing psychosis

Psychotic features are incompatible with hypomania and indicate a manic episode.

7. Diagnosing bipolar disorder from the mnemonic

DIGFAST identifies symptom domains. The diagnosis requires the broader clinical assessment.

DIGFAST vs. SIGECAPS

DIGFAST and SIGECAPS work well as complementary symptom mnemonics.

DIGFAST helps recall manic symptoms:

• Distractibility
• Indiscretion/impulsivity
• Grandiosity
• Flight of ideas
• Activity increase
• Sleep deficit/decreased need
• Talkativeness

SIGECAPS helps recall symptoms associated with a major depressive episode.

The two mnemonics can be useful together when reviewing a patient's history for manic, hypomanic, and depressive episodes.

See our SIGECAPS guide for the corresponding depression mnemonic and criteria reference, and the PHQ-9 scoring guide if you are also using a standardized depression measure. The distinction matters in practice: a patient scoring high on the PHQ-9 with a history of manic or hypomanic episodes is a different formulation from one without.

DIGFAST quick reference

Mania: at least 3 symptoms, or 4 when mood is only irritable, within an episode lasting at least one week unless hospitalization is necessary.

Hypomania: at least 4 consecutive days without marked functional impairment, hospitalization, or psychotic features.

Frequently asked questions about DIGFAST

What does DIGFAST stand for?

DIGFAST stands for Distractibility, Indiscretion or impulsivity, Grandiosity, Flight of ideas, Activity increase, Sleep deficit or decreased need for sleep, and Talkativeness.

How many DIGFAST symptoms are needed for mania?

Three or more symptoms are required. Four or more are required when the mood is only irritable.

How long does mania have to last?

A manic episode generally lasts at least one week, or any duration when hospitalization is necessary.

How long does hypomania have to last?

A hypomanic episode lasts at least four consecutive days and does not include the marked impairment, hospitalization, or psychotic features associated with mania.

What is the difference between mania and hypomania?

Both can include DIGFAST symptoms. Mania meets the higher severity threshold, while hypomania does not produce marked functional impairment, require hospitalization, or include psychotic features.

Is decreased sleep the same as decreased need for sleep?

No. Decreased need for sleep means the patient sleeps less than usual without feeling tired or needing the lost sleep. Insomnia involves difficulty sleeping and typically produces fatigue or distress.

Does the mood have to be elevated for a manic episode?

No. Elevated, expansive or irritable all qualify. What changes with irritable-only mood is the symptom count: four are required rather than three.

Is increased energy required, or just increased mood?

Both. The American Psychiatric Association describes a manic episode as a period of at least one week when a person is extremely high-spirited or irritable most of the day, most days, and possesses more energy than usual. The energy or activity change is part of the gateway criterion, not one of the seven symptoms.

Can a manic episode be shorter than a week?

Yes, if hospitalization is necessary. That is the one route around the duration criterion, and it is why a five-day episode severe enough to require admission can still qualify.

Does DIGFAST diagnose Bipolar I disorder?

No. DIGFAST is a mnemonic. A manic episode is the defining episode requirement for Bipolar I disorder, but the clinician must establish the full episode criteria and consider alternative explanations.

Final takeaway

DIGFAST is a mnemonic for the seven symptom domains of mania: Distractibility, Indiscretion, Grandiosity, Flight of ideas, Activity increase, Sleep deficit, and Talkativeness.

For clinicians, use it as the symptom checklist within the larger episode assessment:

• Confirm a distinct mood change with increased energy or activity.
• Identify 3 or more symptoms, or 4 when mood is only irritable.
• For mania, establish at least one week unless hospitalization is necessary.
• For hypomania, establish at least four consecutive days without marked impairment, hospitalization, or psychosis.
• Consider substance, medication, medical, and other psychiatric explanations.

DIGFAST helps you remember what to ask. The full episode criteria determine what the presentation means clinically.

Sources

1. American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.). American Psychiatric Association Publishing.
2. American Psychiatric Association. What are bipolar disorders? psychiatry.org
3. American Psychiatric Association. What is depression? psychiatry.org

Related guides: SIGECAPS · PHQ-9 scoring · OLDCARTS · Substance use disorder ICD-10

Every source above was opened and checked on October 4, 2026. This is educational content and does not replace the DSM-5-TR criteria or clinical judgment.