Dissociative Assessment

Experiences like memory gaps, feeling detached from yourself, feeling that the world around you isn’t quite real, or feeling disconnected from your emotions can be hard to make sense of. These experiences can happen for a number of different reasons, and a detailed psychiatric assessment can help clarify what might be contributing to them.Prof. Ahmed El-Missiry provides private psychiatric assessments for dissociation and related symptoms, looking at your current symptoms, mental health history, relevant medical factors, trauma history where appropriate, and how your symptoms are affecting everyday life.

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What Is a Dissociative Assessment

Dissociation describes a disconnection between aspects of a person's thoughts, memories, feelings, identity, actions or awareness. Everyone experiences mild forms of this from time to time — but more persistent or distressing dissociative experiences can interfere with memory, relationships, work, concentration and everyday functioning.

It can involve feeling disconnected from yourself, feeling that your surroundings are unreal, having gaps in memory, or feeling uncertain about your identity. Dissociative experiences occur in different mental health contexts, and don't automatically mean someone has a dissociative disorder — which is why a clinical assessment matters when symptoms are persistent, distressing, or affecting daily life.

You may benefit from a dissociative assessment if you:

  • Experience unexplained memory gaps or periods of lost time
  • Frequently feel detached from yourself or your surroundings
  • Notice confusion about your identity or sense of self
  • Feel that the world around you seems unreal or disconnected
  • Have difficulty recalling important personal events or experiences
  • Need a specialist assessment to clarify dissociative symptoms and treatment options

Our Dissociative Assessment Service

Comprehensive Dissociative Disorders Assessment

A detailed psychiatric evaluation designed to assess dissociative symptoms, explore contributing psychological factors, and develop a personalised treatment plan that supports long-term recovery and emotional wellbeing.

£ 300

  • 45–50 Minutes
  • Remote Consultation
  • Comprehensive assessment of dissociative symptoms and clinical history
  • Review of psychological, medical, and trauma-related factors where appropriate
  • Evaluation using recognised psychiatric diagnostic criteria
  • Personalised treatment recommendations and ongoing care planning
  • Guidance on psychological therapies, coping strategies, and follow-up support

Payment & Insurance

Klarna interest-free instalments are available for eligible appointments.Accepted Insurance Providers Aviva, AXA Health, Preferred Health Care Ltd., Vitality Health, Bupa UK, WPA, Allianz Worldwide Care.Pre-authorisation is required using GMC Number: 06032945.

How the Dissociative Assessment Process Works

Fill in a confidential questionnaire covering your symptoms, medical history, and personal experiences before your consultation.

Meet with your psychiatrist through a secure online consultation to discuss your symptoms, concerns, and experiences in a safe and supportive environment.

Your psychiatrist will carefully evaluate your symptoms, review your clinical history, and assess possible dissociative disorders using recognised diagnostic guidelines.

Receive tailored recommendations that may include psychological therapy, trauma-informed treatment, medication where appropriate, and ongoing specialist support.

Regular review appointments help monitor your progress, evaluate treatment outcomes, and adjust your care plan to support long-term recovery.

Why Choose Prof. Ahmed El-Missiry?

  • Consultant psychiatrist experienced in assessing dissociative disorders
  • Evidence-based evaluations using recognised clinical guidelines
  • Personalised treatment plans tailored to your individual needs
  • Compassionate, confidential, and trauma-informed psychiatric care
  • Ongoing support focused on improving emotional stability and daily functioning
  • Convenient online consultations available throughout the UK
prof.Ahmed-El-Missiry

In short

What is a dissociative disorder? A mental health condition involving a significant disruption or disconnection in memory, identity, awareness or perception. It’s different from occasional daydreaming or ordinary forgetfulness.

Can a psychiatrist diagnose it? Yes. A psychiatrist experienced in this area can assess dissociative symptoms and consider whether they fit a dissociative disorder or another psychiatric or medical explanation.

How long does the assessment take? Around 45–50 minutes.

What does it cost? £300 for the dissociative disorder assessment.

Is it available online? Yes, secure video consultations are available UK-wide.

Is dissociation the same as psychosis? No. They’re different clinical experiences, though both can be hard to put into words, which is exactly why a proper assessment helps.

What is dissociation?

Dissociation describes a disconnection between aspects of a person’s thoughts, memories, feelings, identity, actions or awareness. Everyone experiences mild forms of this from time to time, but more persistent or distressing dissociative experiences can interfere with memory, relationships, work, concentration and everyday functioning.

It can involve feeling disconnected from yourself, feeling that your surroundings are unreal, having gaps in memory, or feeling uncertain about your identity. Dissociative experiences occur in different mental health contexts and don’t automatically mean someone has a dissociative disorder. That’s why a clinical assessment matters when symptoms are persistent, distressing, or affecting daily life.

Common symptoms of dissociation

  • Memory gaps and lost time: difficulty remembering certain periods, conversations or experiences. This is different from ordinary forgetfulness and worth assessing in the context of your wider history.
  • Depersonalisation: feeling detached from yourself, observing yourself from outside, feeling emotionally disconnected from your body, or feeling unfamiliar with who you are.
  • Derealisation: a sense that the world around you is unreal or unfamiliar. Surroundings can feel dream-like, distant, foggy or artificial.
  • Identity-related difficulties: uncertainty about your sense of identity, or feeling disconnected from different parts of yourself.
  • Emotional detachment: feeling numb or disconnected from people or events that would normally affect you.
  • Difficulty recalling personal experiences: trouble accessing memories of important events or periods in your life.

Depersonalisation and derealisation

Depersonalisation is a feeling of detachment from yourself, your body, thoughts or emotions.

Derealisation is a feeling that the world or your surroundings are unreal, distant, unfamiliar or dream-like.

The two can occur separately or together, and can show up in different clinical situations. An assessment looks at the wider pattern: duration, triggers, medical history and impact on daily life.

Types of dissociative disorders

  • Depersonalisation-derealisation disorder: persistent or recurrent depersonalisation, derealisation, or both, where a person feels detached from themselves or from the world around them.
  • Dissociative amnesia: significant difficulty remembering important autobiographical information, well beyond ordinary forgetfulness. It needs clinical assessment to understand its nature and possible causes.
  • Dissociative identity disorder (DID): a complex condition involving significant disruption of identity alongside memory difficulties. DID should only ever be diagnosed after a careful, specialist assessment, since experiences that look similar on the surface can have very different explanations.

When should you consider a dissociative assessment?

It may be worth considering if you’re experiencing:

  • Unexplained gaps in memory or lost time
  • Feeling detached from yourself
  • Feeling that the world isn’t real
  • Emotional disconnection
  • Uncertainty about changes in your sense of identity
  • Significant trauma-related symptoms
  • Recurrent dissociative experiences
  • Symptoms affecting work, education or relationships
  • Symptoms that don’t fit an existing diagnosis
  • Uncertainty about whether it’s dissociation, PTSD, anxiety, depression, or something else

You don’t need to work out the diagnosis yourself before booking.

Dissociation and trauma

Dissociation can occur alongside traumatic or highly stressful experiences, and some people with dissociative disorders report previous trauma, including in childhood. But not every dissociative experience has the same cause, and trauma shouldn’t be assumed as the explanation for every symptom. The assessment considers your individual history rather than assuming a particular cause. Where trauma is relevant, it explores how that relates to your current symptoms, emotional responses, memory, relationships and everyday functioning.

Dissociation and other conditions

  • Dissociation and PTSD: dissociative symptoms can occur alongside PTSD, but PTSD-related dissociation doesn’t automatically mean a separate dissociative disorder. If you’re also experiencing intrusive memories, nightmares, avoidance or hyperarousal, see our PTSD assessment.
  • Dissociation and anxiety: anxiety can sometimes bring feelings of unreality or detachment, which makes it hard to know what’s driving what. Read about our anxiety assessment.
  • Dissociation and depression: emotional numbness, reduced concentration and withdrawal can occur with both. Learn more about our depression assessment.
  • Dissociation and ADHD: concentration and memory difficulties can have several causes. A clinical history helps distinguish long-standing ADHD from difficulties tied to anxiety, trauma or sleep. See our ADHD assessment.
  • Dissociation and personality difficulties: identity, relationships and emotional regulation can overlap across conditions without being the same thing. Read about our personality disorder assessment.
  • Dissociation and sleep problems: poor sleep affects concentration, memory, emotional regulation and perception, and is considered as part of the wider assessment. See our insomnia treatment.

Is dissociation the same as psychosis?

No. Dissociation can involve detachment, unreality or memory disruption. Psychosis can involve hallucinations or delusions. They’re different clinical experiences, though some can be hard to describe and may occasionally feel similar to the person going through them. A psychiatrist can assess the nature, timing and context and consider whether further assessment is needed. This isn’t something to work out from an online description alone.

Is dissociation the same as normal forgetfulness?

No. Everyone forgets things sometimes. Dissociative amnesia involves substantially more significant gaps in autobiographical memory. The assessment looks at what’s missing, how it developed, how often it happens, and whether another medical, neurological, psychiatric or substance-related explanation needs considering.

Can dissociation have a physical or neurological cause?

Some symptoms involving memory, awareness, altered consciousness or unusual episodes of behaviour can have medical or neurological explanations. A responsible assessment considers relevant physical health factors, and further medical investigation may be recommended where appropriate.

How is a dissociative disorder diagnosed?

There’s no single symptom that confirms a diagnosis. It comes from the complete clinical picture.

  • Your current symptoms: memory difficulties, lost time, depersonalisation, derealisation, identity-related experiences, emotional detachment, and episodes of confusion or disconnection.
  • Your history: previous psychiatric diagnoses and treatment, medication, family history, sleep, substance use where relevant, physical health, and any previous trauma.
  • Trauma and stress: explored where relevant, and only in as much detail as is clinically useful.
  • Functional impact: how symptoms affect work, education, relationships, sleep, concentration and social life.
  • Differential diagnosis: whether another psychiatric, physical, neurological or substance-related condition better explains what you’re experiencing, or whether more than one is present.
  • Clinical formulation: everything is brought together to determine appropriate recommendations.

What happens during the assessment?

  1. Before your appointment: a confidential questionnaire covering your symptoms, medical history and background.
  2. Clinical consultation: a chance to talk through what you’ve been experiencing and how it’s affecting your life.
  3. Symptom assessment: exploring the nature, frequency and duration of your dissociative experiences.
  4. History and context: relevant psychiatric, physical health, developmental and trauma history.
  5. Differential diagnosis: considering other possible explanations and coexisting conditions.
  6. Clinical formulation: bringing everything together to determine whether your symptoms fit a dissociative disorder or another presentation.
  7. Recommendations: these may include psychological therapy, psychiatric follow-up, treatment for associated conditions, medication where appropriate, or further specialist assessment.

Is a specialist dissociative assessment different from a general psychiatric assessment?

Dissociative symptoms can be complex, often overlapping with trauma-related, anxiety, mood and even neurological presentations. A specialist assessment looks beyond any single symptom. It considers history, memory, identity, awareness, emotional experience, trauma where relevant, physical health, and how all of this affects your day-to-day life. The exact approach is tailored to your individual presentation.

Private dissociative disorder assessment in London

If an in-person London appointment suits you, a private assessment offers the chance to discuss dissociative symptoms with a Consultant Psychiatrist in a confidential clinical setting. Appointments may also be available online for patients elsewhere in the UK. For current London locations and availability, contact us before booking. If you’re looking for a broader psychiatric assessment, you can also read about our private psychiatrist services.

Online dissociative assessment across the UK

A secure online consultation covers many of the same areas as an in-person assessment: current symptoms, mental health history, relevant medical history, trauma history where appropriate, functional impact, and recommendations for next steps. Whether online is right for you depends on your circumstances and clinical needs.

Dissociative assessment cost

Fee: £300. Appointment length: approximately 45–50 minutes.

The assessment includes a review of dissociative symptoms, relevant clinical history, and personalised recommendations. Please confirm the current fee and availability when booking.

What happens after a dissociative assessment?

The goal isn’t simply a diagnostic label. It’s understanding your symptoms and identifying the right next steps. Depending on your presentation, recommendations may include:

  • Psychological therapy
  • Trauma-informed psychological support
  • Psychiatric follow-up
  • Treatment for associated anxiety or depression
  • Treatment for PTSD where relevant
  • Medication for associated conditions, where clinically appropriate
  • Further specialist assessment
  • Ongoing review

Treatment and support for dissociative disorders

Talking therapies are commonly used, often focused on understanding what’s contributing to your symptoms, developing strategies for managing periods of disconnection, and addressing associated difficulties. There’s no single medication designed specifically to treat dissociation itself. Medication may sometimes be considered for associated conditions such as depression, anxiety or panic symptoms where clinically appropriate. Where trauma or PTSD is also present, trauma-focused psychological approaches may be included. The right treatment plan follows from your individual assessment.

Why choose Prof. Ahmed El-Missiry?

Prof. Ahmed El-Missiry is a Consultant Psychiatrist and Professor of Psychiatry, providing private psychiatric care across a range of conditions. His approach to dissociative assessment focuses on:

  • Individual clinical assessment
  • Careful exploration of dissociative symptoms
  • Consideration of relevant medical and psychiatric factors
  • Trauma-informed assessment where appropriate
  • Consideration of coexisting mental health conditions
  • Assessment of impact on everyday functioning
  • Personalised clinical recommendations
  • Confidential care, in London or online UK-wide

Read more on our About Us page, or see all our services.

Clinical information and references

Information about dissociative disorders should always be interpreted in the context of an individual’s own circumstances. A useful UK source is the NHS information on dissociative disorders.

Frequently asked questions

What is a dissociative disorder?

A mental health condition involving significant disruption or disconnection in memory, identity, awareness or perception.

What are the symptoms of dissociation?

Memory gaps, lost time, feeling detached from yourself, feeling your surroundings are unreal, emotional detachment, and difficulties involving identity or awareness.

What is depersonalisation?

A feeling of detachment from yourself, your body, thoughts or emotions.

What is derealisation?

A feeling that the world or your surroundings are unreal, distant, unfamiliar or dream-like.

Can depersonalisation and derealisation happen together?

Yes, some people experience both at once.

Can trauma cause dissociation?

It can occur alongside traumatic or highly stressful experiences, but symptoms can have different causes. That’s why a clinical assessment matters before drawing conclusions.

Can PTSD cause dissociation?

Yes, dissociative symptoms can occur alongside PTSD, though that doesn’t automatically mean a separate dissociative disorder is present.

Can anxiety cause feelings of unreality?

Yes, some people with anxiety describe feelings of unreality or detachment. An assessment helps clarify what’s underlying it.

Can a psychiatrist diagnose a dissociative disorder?

Yes, an experienced psychiatrist can assess dissociative symptoms and consider whether they’re consistent with a dissociative disorder or another explanation.

What happens during a dissociative assessment?

It may explore your symptoms, memory, identity, awareness, mental health history, physical health, relevant trauma history, previous treatment, and how symptoms affect your everyday life.

How long does a dissociative assessment take?

Around 45–50 minutes.

How much does a private dissociative assessment cost?

£300. Please confirm the current fee before booking.

Is dissociative assessment available online?

Yes, across the UK, subject to clinical suitability.

Is dissociation the same as psychosis?

No. They’re different clinical experiences, and a professional assessment helps where there’s uncertainty.

Is dissociation the same as normal forgetfulness?

No. Clinically significant dissociative memory problems go well beyond ordinary everyday forgetfulness.

What happens after the assessment?

You’ll receive personalised recommendations, which may include psychological therapy, psychiatric follow-up, treatment for associated conditions, medication where appropriate, or further assessment.

Book a private dissociative assessment

If you’re experiencing unexplained memory gaps, periods of lost time, depersonalisation, derealisation, emotional detachment or other dissociative symptoms, a psychiatric assessment can help you understand what might be contributing to your difficulties. You don’t need to determine the diagnosis yourself first.

Book a private dissociative disorder assessment

For questions about appointments, availability or the process, contact us.

Important information about urgent mental health problems

A private psychiatric assessment is not an emergency service. If you or someone else is in immediate danger, at risk of serious harm, or needs urgent medical attention, call 999, attend the nearest A&E, or contact NHS 111 for urgent advice. If you’re experiencing dissociative symptoms but aren’t in immediate danger, you can arrange a private assessment to discuss your concerns.

Prof. Ahmed El-Missiry, Consultant Psychiatrist, GMC No. 06032945