The Lyceum

Trauma and PTSD Subtypes: Assessment-Led Guidance

Specialist CBT therapy for anxiety, OCD, depression and more in West London

Trauma can affect people in different ways. Some people describe intrusive memories, nightmares, hypervigilance or avoidance following a specific event. Others describe a more pervasive pattern of difficulty with trust, emotional regulation, relationships or a sense of self that has developed over time. A guide cannot diagnose PTSD, complex PTSD or another trauma-related condition or determine which pattern applies to an individual. Descriptions of trauma presentations in clinical literature can help clinicians and individuals find language for experiences that are difficult to name. They do not establish a diagnosis, determine a cause or predict the outcome of treatment. A guide cannot determine whether a person has PTSD, complex PTSD, developmental trauma or another difficulty. An assessment can consider the person's current experience, history, health, safety and priorities. Physical symptoms can have many possible explanations, including medical conditions, medication, sleep disruption, physical health conditions, neurodivergence and other factors. New, severe or changing physical symptoms should be discussed with an appropriate medical professional. A psychological explanation and a medical question can both need attention at the same time. Trauma-focused CBT may be considered after individual assessment where trauma is affecting daily life. Trauma-focused or exposure-based work should be planned with a suitably qualified clinician after discussion of the rationale, alternatives, safety and pacing. A guide is not a self-directed programme for trauma processing. For related information, see trauma-focused CBT at https://lyceumclinic.co.uk/therapy/trauma/, the trauma and PTSD guide at https://lyceumclinic.co.uk/guides/trauma-ptsd-comprehensive-guide/, trauma neuroscience at https://lyceumclinic.co.uk/guides/trauma-neuroscience/ and trauma and relationships at https://lyceumclinic.co.uk/guides/trauma-relationships-west-london/. If there is immediate danger, thoughts of self-harm, an inability to stay safe or a sudden marked deterioration, call 999, attend A&E or use urgent local crisis or medical support.

Frequently asked questions

Can a guide diagnose PTSD or complex PTSD?

No. A guide can describe general patterns. An individual assessment can consider your specific experience, health, safety and context.

Can physical symptoms be assumed to be trauma-related?

No. New, severe or changing physical symptoms should be discussed with an appropriate medical professional. A psychological explanation and a medical question can both need attention at the same time.

Can I use this guide to work through trauma on my own?

No. Trauma-focused or exposure-based work should be planned with a suitably qualified clinician after individual assessment, consent and collaborative planning.

When should I seek urgent support?

If there is immediate danger, thoughts of self-harm, an inability to stay safe or a sudden marked deterioration, call 999, attend A&E or use urgent local crisis or medical support.

Related pages

  • Trauma-focused CBT
  • Trauma and PTSD clinical guide
  • Trauma-focused CBT evidence
  • How trauma-focused CBT works
  • Book a free consultation
  • The Neuroscience of Trauma: What Actually Happens in the Brain and Body
  • Trauma Recovery: What the Evidence Says About Getting Better
  • Trauma and Relationships: Assessment-Led Guidance
  • Explore all clinical guides

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Written by Sanah Younis, BABCP-accredited CBT Therapist at The Lyceum Clinic.

Last clinically reviewed: 14 August 2026

Clinical information on this page is general and does not replace personalised assessment. If you are in immediate danger, call 999 or attend A&E.

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