Irritability

What is Irritability?

Irritability is a tendency toward anger, annoyance and impatience, with a lowered threshold for frustration and less control over emotional reactions. It is commonly experienced in daily life, and it is a symptom that can accompany many conditions, not a disease by itself.^[1]

Common symptoms

Irritability differs from ordinary anger in that it is more unpredictable, comes with a lowered threshold for negative feelings, and is out of proportion to what set it off.^[1]

• Quick or disproportionate reactions to small annoyances
• Mood swings from calm to agitated
• Low tolerance for stress and frustration
• Restlessness, muscle tension or feeling on edge
• Feeling easily hurt or offended

Causes and risk factors

Irritability has many possible causes. It is a recognized feature of anxiety disorders and depression, and it appears in premenstrual syndrome and premenstrual dysphoric disorder.^{[2, 3, 4]} Poor sleep, pain, hormonal change, substance use or withdrawal, and some medicines can also contribute.^{[1, 5]}

Severe, ongoing irritability predicts later mental health problems and difficulty with health, work and relationships.^[1]

How it is diagnosed and treated conventionally

There is no test for irritability. A clinician considers its context, how long it has lasted, how intense it is and what else is going on, then looks for a cause such as depression, anxiety, a sleep disorder, hormonal change or a medicine effect.^[1] Treatment depends on that cause. It can include psychotherapy, lifestyle changes such as exercise and better sleep, and sometimes medication.^{[3, 4]}

In children and teens, irritability is closely linked to depression and anxiety, and it should be assessed by a pediatrician or child mental health professional.^{[6, 7]}

Why Irritability calls for a whole-person approach

Irritability rarely has a single cause. Mood, stress, sleep, hormones and physical discomfort can all lower the threshold for frustration, and they often overlap.^[1]

Care that looks at these factors together is a reasonable addition to the treatment your physician or therapist recommends for the underlying cause.

Mood and anxiety

Irritability is tied to depression, and irritability without low mood or loss of interest is uncommon in children and teens with depression.^[7] Irritability and sleep disturbance are also among the listed features of generalized anxiety disorder.^[2]

Sleep

Poor or non-restorative sleep can affect mood and emotional functioning.^[5] Sleeplessness is a common feature of both anxiety and depression, so sleep problems and irritability often travel together.^[2]

Hormonal change

In premenstrual syndrome, irritability, anger and mood swings appear in the luteal phase of the cycle and settle after menstruation begins.^[4]

Stress and frustration responses

Research suggests that irritability involves heightened reactions to frustration and perceived threat.^[6]

Acupuncture for Irritability

What the research shows

No trials were found that tested acupuncture for irritability itself, so the evidence comes from related conditions and is weak.

For premenstrual syndrome, a Cochrane review of 5 small trials of acupuncture or acupressure (277 women) found low-quality evidence, from a single trial of 67 women, that acupuncture may reduce mood-related and physical symptoms more than sham acupuncture. It could not say whether acupuncture matched standard treatments, because none had been compared.^[8] An earlier review of 10 trials found promising results for premenstrual symptoms, with important flaws in study methods that weaken the evidence.^[9]

For depression, a Cochrane review of 64 studies found low-quality evidence that acupuncture may modestly reduce depression severity compared with no treatment, and a smaller effect compared with sham acupuncture. The review called for high-quality trials.^[10]

These findings do not show that acupuncture reduces irritability. They suggest it may help with some of the conditions in which irritability occurs.

How acupuncture may work

How acupuncture might affect mood and stress responses is not settled. No mechanism studies specific to irritability were found, so we do not offer an explanation here.

What treatment involves

Treatment uses fine, sterile, single-use needles placed at points on the body, and sometimes the ear, usually left in place for about 20 to 40 minutes. A course of several visits is typical, and we reassess after a short course to see whether your symptoms, sleep and stress are changing. Premenstrual trials gave from 7 to 28 sessions.^[8]

In prospective studies, about 9 in 100 patients had a minor reaction such as bleeding, pain or redness at a needle site, and serious events occurred in about 1 in 10,000 patients.^[11] Tell the practitioner first if you have a bleeding disorder, take blood thinners, are pregnant, or have a pacemaker (relevant to electroacupuncture).

Ayurvedic medicine for Irritability

The Ayurvedic view

In Ayurveda, irritability and short temper are traditionally associated with a Pitta imbalance, the principle linked to heat, intensity and digestion, and sometimes with an agitated, restless Vata state. These are traditional categories used to choose treatment, not biomedical diagnoses.

Therapies that may be used

Care is chosen for the individual and traditionally combines:

• Daily routine and diet intended to cool Pitta or calm Vata, such as regular meals, avoiding very spicy food, and steady sleep and waking times
• Warm or cooling oil massage of the body or scalp
• Breathing practices, yoga and meditation
• Herbs such as ashwagandha (Withania somnifera), which has been studied for stress and anxiety^{[12, 13]}

Panchakarma procedures are not appropriate during pregnancy, acute illness or frailty, or before a medical or mental health cause has been assessed.

What the research shows

No trials of Ayurvedic treatment for irritability were found. Studies of Ayurvedic herbs look at related problems.

A meta-analysis of 12 randomized trials with 1,002 participants found lower anxiety and stress scores with ashwagandha than with placebo, but the certainty of the evidence was low and the results varied widely.^[12] Another meta-analysis of 9 trials with 558 patients reported lower perceived stress, anxiety scores and cortisol with ashwagandha, with mild to moderate side effects in four trials and unknown long-term safety.^[13] A guideline group modestly supported ashwagandha for anxiety disorders, but anxiety is not the same as irritability.^[14]

Herbal medicine for Irritability

Herbs and formulas that have been studied

The herbs with the most research for symptoms that include irritability are those studied for premenstrual syndrome, such as chasteberry (Vitex agnus-castus), St John's wort, and the Chinese formula Xiao Yao San.^{[15, 16]} Ashwagandha, discussed above, has been studied for stress and anxiety.^[12]

What the research shows

The evidence is limited and is not specific to irritability. A systematic review of 17 trials of chasteberry for premenstrual syndrome found that most reported benefit for total symptoms. The pooled effect was large, but the studies had a high risk of bias, very different results from trial to trial and likely publication bias, so the authors judged the effect likely overestimated.^[16] A review of acupuncture and herbal trials for premenstrual symptoms reported improvement with several herbs, and judged the evidence to be limited.^[15]

A 2022 guideline from two biological psychiatry societies supported certain herbs for specific mental health conditions, for example St John's wort for depression, and advised using them alongside standard medical care.^[14]

Safety and herb-drug interactions

Herbs can interact with medicines. St John's wort has been reported to lower the blood levels of several drugs, including some antidepressants and oral contraceptives, and to cause serotonin syndrome when combined with SSRI antidepressants.^[17] People taking antidepressants or hormonal medicines need a practitioner's review before using herbs for mood.

Ashwagandha supplements have been linked to cases of liver injury, in a small case series usually with jaundice and itching appearing 2 to 12 weeks after starting.^[18] Tell us if you have liver disease or thyroid disease. In one study, about one fifth of Ayurvedic products bought online contained detectable lead, mercury or arsenic.^[19] Herbs should come from tested sources and be prescribed individually. Tell us if you are pregnant or breastfeeding.

Translating traditional medicine into modern biological language

The links drawn here are interpretation, not equivalence. Chinese medicine often describes irritability and a short temper as liver qi stagnation or liver fire, a pattern of stuck or rising energy tied to stress. Researchers studying stress-related symptoms look at ideas that loosely parallel this picture, such as the stress hormone cortisol and how the nervous system responds to frustration and threat.^{[6, 13]}

Ayurveda's aggravated Pitta describes heat and intensity of temperament. No study has shown that a dosha corresponds to a specific biological process.

How this care fits with your medical care

Integrative care for irritability is complementary. Keep your physician, therapist or psychiatrist, and do not stop or change prescribed medicines, including antidepressants, without your prescriber. We do not diagnose the cause of irritability, so persistent or worsening irritability should be evaluated medically, since it may be a sign of depression, anxiety, a sleep disorder, a thyroid or hormonal problem, or a medicine effect.

Please bring your diagnosis if you have one, a full list of medicines and supplements, and any recent test results.

When to seek urgent medical care

Irritability that comes with the following needs prompt attention, because irritability in young people is linked to suicide risk and severe irritability to later mental health problems.^{[1, 6]}

• Thoughts of suicide or self-harm; call or text 988 (Suicide and Crisis Lifeline)
• Thoughts of harming someone else or loss of control over anger
• Several days with little sleep, racing thoughts or unusually high energy
• Confusion, seeing or hearing things that others do not, or severe agitation
• Sudden change in behavior after a head injury, new medicine or substance use

If any of these are an emergency, call 911 or go to the nearest emergency department.