Mental health
PTSD: symptoms, treatment and how to get help
Post-traumatic stress disorder (PTSD) is a mental health condition that can follow a very frightening, stressful or distressing event. It causes flashbacks and nightmares, avoidance, feeling on edge and changes in mood. It is treatable, including when it starts years later. NICE recommends trauma-focused CBT or EMDR first, with medicines as a second option, and in England adults can refer themselves.
Last checked: 2026-10-11
Key facts
At a glance.
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What it is
A mental health condition caused by very stressful, frightening or distressing events. The main symptom is repeated distressing thoughts about the event.
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Core symptoms
Flashbacks and nightmares, avoidance, feeling on edge or hypervigilant, and negative changes in mood and thinking.
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Timing
Symptoms may begin straight after the event or many months, even years, later, according to the NHS.
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When to seek help
NHS inform advises contacting a GP practice if problems continue about 4 weeks after the event or are particularly troublesome.
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Outlook
The NHS says PTSD usually gets better for most people, though it can be more severe and longer lasting for some.
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Main treatments
NICE recommends individual trauma-focused CBT, typically over 8 to 12 sessions, and EMDR for adults who present more than 3 months after a non-combat-related trauma. Medicines such as sertraline or venlafaxine are considered only if you prefer them.
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Self-referral
The NHS says adults aged 18 or over (16 or over in some areas) can refer themselves to an NHS talking therapies service without a GP referral.
How is PTSD treated?
The treatment that is recommended depends on how soon after the event you are and whether you are an adult or a child. The NHS says a mental health professional will help you learn and practise skills for managing symptoms such as flashbacks, and NICE guideline NG116 sets out the options.
For mild or recent symptoms, NHS inform describes watchful waiting with a follow-up within a month, and NICE says active monitoring can be considered for subthreshold symptoms within 1 month of a traumatic event. For adults with PTSD who present more than a month after the trauma, NICE recommends an individual trauma-focused CBT intervention, typically over 8 to 12 sessions but more if clinically indicated, for example after multiple traumas. Examples are cognitive processing therapy, cognitive therapy for PTSD, narrative exposure therapy and prolonged exposure.
NICE recommends EMDR (eye movement desensitisation and reprocessing) for adults who present more than 3 months after non-combat-related trauma, also typically over 8 to 12 sessions, and considers it between 1 and 3 months if the person prefers it. For children and young people aged 7 to 17 it recommends trauma-focused CBT, typically over 6 to 12 sessions, with EMDR considered only if they do not respond to or engage with it.
For people with additional needs, including complex PTSD, NICE says to build in extra time to develop trust by increasing the duration or number of therapy sessions according to need, and to take into account safety and stability in their circumstances.
| Who and when | What NICE recommends | Typical length |
|---|---|---|
| Adults, within 1 month, subthreshold symptoms | Consider active monitoring with follow-up within 1 month | Not applicable |
| Adults, more than 1 month after trauma | Individual trauma-focused CBT | Typically 8 to 12 sessions, more if needed |
| Adults, more than 3 months after non-combat trauma | EMDR | Typically 8 to 12 sessions, more if needed |
| Children and young people aged 7 to 17 | Individual trauma-focused CBT; EMDR only if they do not respond or engage | Typically 6 to 12 sessions, more if needed |
Medicines and PTSD
Medicines are secondary to talking therapy. NICE says to consider venlafaxine or an SSRI such as sertraline for adults if they prefer drug treatment, with regular review, and not to offer drug treatments for PTSD to children and young people under 18. It advises against benzodiazepines to prevent PTSD.
The NHS stresses not stopping a PTSD medicine unless a doctor says so, even if you feel better, and says some medicines are unsafe in pregnancy, so tell your doctor if you are pregnant or planning a pregnancy.
What are the symptoms of PTSD?
The NHS describes symptoms in several groups. Avoidance includes staying away from people or places that remind you of the event. Mood and thinking can change, with negative beliefs about yourself, lost interest in usual activities, disconnection or dissociation, and difficulty controlling or feeling emotions. Hypervigilance means feeling very anxious and looking for danger all the time. Sleep is often disrupted, and some people have headaches, tummy problems or pain without a physical cause.
Children can show it differently. The NHS lists dreams about the event that become nightmares about monsters, re-enacting the trauma through play, sleep problems such as refusing to sleep alone, bedwetting they did not have before, loss of interest in things they enjoyed, talk of death or dying, and frequent tummy aches and headaches.
| Group | Examples |
|---|---|
| Reliving | Flashbacks, nightmares, intrusive thoughts or images, physical sensations such as sweating or trembling. |
| Alertness | Feeling on edge, being easily startled, irritability, difficulty concentrating, sleep problems. |
| Avoidance | Avoiding reminders, not talking about it, feeling numb or cut off, being unable to recall details. |
| Beliefs and feelings | Feeling to blame, that nowhere is safe, or overwhelming anger, sadness, guilt or shame. |
What is PTSD?
PTSD is a mental health condition that can follow very stressful, frightening or distressing events. The NHS says the main symptom is repeatedly having distressing thoughts about the event or experience, which may appear as flashbacks, vivid or intrusive images, and recurring dreams or nightmares. NHS inform describes a flashback as feeling like the event is happening now.
It is a recognised reaction rather than a sign of weakness. NHS inform notes that it is normal to have upsetting and confusing thoughts after a traumatic event, and that in most cases they improve after a few weeks. PTSD is the term used when the reactions persist or become disabling. The NHS also describes complex PTSD (CPTSD), which has largely the same symptoms but different causes.
What causes PTSD?
The NHS lists a serious or life-threatening accident, physical or sexual assault, abuse including childhood or domestic abuse, certain jobs such as police, paramedic or healthcare work, serious health problems such as intensive care, a difficult birth or a baby dying, and war. You may have experienced the event yourself, seen it happen to someone else, or heard about it happening to someone close to you.
NHS inform adds examples such as kidnap, natural disasters, being diagnosed with a life-threatening condition and traumatic childbirth. NICE says that exposure can be to single, repeated or multiple events, and includes work-related exposure and remote exposure. The NHS says complex PTSD can follow child abuse or neglect, ongoing domestic violence or abuse, and repeatedly witnessing violence or abuse.
When to get urgent help
PTSD is not an emergency in itself, but crisis can happen. If you are at immediate risk of harming yourself, the NHS says to get urgent help for a mental health crisis; if you cannot keep yourself safe, call 999 or go to A&E.
NHS inform advises contacting your GP practice if you or your child are still having problems about 4 weeks after the traumatic experience, or earlier if symptoms are particularly troublesome, and the NHS advises seeing a GP if you have been diagnosed and treatment is not helping.
How to get help for PTSD: NHS and private pathways
NHS inform says to contact your GP practice if you or your child are still having problems about 4 weeks after the traumatic experience, or if the symptoms are particularly troublesome. The NHS advises seeing a GP if you think you have PTSD or if you have been diagnosed and treatment is not helping. NHS talking therapies can help, and in many areas adults can refer themselves directly without a GP referral.
A GP will ask about symptoms and will usually refer to a mental health specialist such as a talking therapies service or psychiatrist. NICE guidance says GPs take responsibility for assessment and initial coordination of care, that assessment should be comprehensive and include a risk assessment, and that treatment should not be delayed solely because of court proceedings or compensation claims. If you are at immediate risk, the NHS says to get urgent help for a mental health crisis.
Self-help and support
The NHS suggests talking to someone you trust or joining a support group, keeping a diary to spot triggers for flashbacks, trying breathing exercises, staying active, eating well and getting enough sleep. It advises avoiding recreational drugs, smoking and heavy alcohol use. Charities named by the NHS include Mind, Anxiety UK, the Mental Health Foundation and Combat Stress for veterans and their families.
These measures support professional treatment rather than replace it. The NHS says a mental health professional will help you learn and practise skills for managing symptoms such as flashbacks.
Frequently asked
Questions people ask.
Quick, plain-English answers to the questions we hear most.
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What is the best treatment for PTSD?
NICE recommends individual trauma-focused CBT for adults who present more than a month after the trauma, and EMDR for those presenting more than 3 months after a non-combat-related trauma. Medicines are only considered if you prefer them.
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What is PTSD?
The NHS describes it as a mental health condition caused by very stressful, frightening or distressing events. The main symptom is repeatedly having distressing thoughts about the event, such as flashbacks, intrusive images and nightmares.
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What are the symptoms of PTSD?
The NHS lists reliving the event through flashbacks and nightmares, avoiding reminders, feeling on edge or hypervigilant, sleep problems, and negative changes in mood and thinking, such as guilt, shame or feeling disconnected.
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How soon after the event do symptoms start?
The NHS says symptoms may begin straight after the event or many months, or even years, later. NHS inform says it can be treated even if it develops many years after the event.
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When should I contact a GP?
NHS inform advises contacting your GP practice if you or your child are still having problems about 4 weeks after the event, or if symptoms are particularly troublesome.
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Can I refer myself for therapy?
The NHS says adults aged 18 or over, or 16 or over in some areas, can refer themselves directly to an NHS talking therapies service without a GP referral.
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Are medicines used for PTSD?
NICE says to consider venlafaxine or an SSRI such as sertraline for adults if they prefer drug treatment. It advises against drug treatments for children and young people, and against benzodiazepines to prevent PTSD.
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What is complex PTSD?
The NHS says the symptoms are largely the same as PTSD but the causes differ, such as child abuse or neglect, ongoing domestic abuse and repeatedly witnessing violence or abuse.
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Does PTSD get better?
The NHS says it usually gets better for most people, although it can be more severe and last longer for some. NHS inform says it can be treated even if it develops many years after the event.
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How does PTSD show in children?
The NHS lists re-enacting the event through play, nightmares, sleep problems, bedwetting, loss of interest in usual activities, talk of death and frequent tummy aches or headaches.
Where this comes from
Sources and checking.
This guide is for information, not medical advice.
Your GP or consultant knows your history and can tell you which parts apply to you. If your symptoms are severe, rapidly worsening, or come with red-flag features, seek urgent medical care. Figures and availability change, so treat them as a guide and confirm with the provider.
Published 2026-10-11, next review 2027-10-11.
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NHS: Post-traumatic stress disorder (PTSD), https://www.nhs.uk/mental-health/conditions/post-traumatic-stress-disorder-ptsd/ , retrieved October 2026
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NHS inform: Post-traumatic stress disorder (PTSD), https://www.nhsinform.scot/illnesses-and-conditions/mental-health/post-traumatic-stress-disorder-ptsd , retrieved October 2026
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NICE NG116: Post-traumatic stress disorder, recommendations, https://www.nice.org.uk/guidance/ng116/chapter/Recommendations , retrieved October 2026
Related guides
Keep reading.
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Complex PTSD
PTSD arising from repeated or prolonged trauma.
Read guide -
Eye movement desensitisation and reprocessing (EMDR)
How EMDR sessions are structured.
Read guide -
Nightmare disorder
Recurring distressing dreams and their treatment.
Read guide -
Cognitive behaviour therapy
How CBT works and what sessions involve.
Read guide -
Acute stress disorder
Stress reactions in the first weeks after trauma.
Read guide -
Depression
Low mood that often occurs alongside PTSD.
Read guide