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Get a Sick Note for PTSD

PTSD is a clinically recognised condition and a valid reason to take time off work, issued by a UK GP with full sensitivity and confidentiality.

You should not have to explain yourself in a waiting room to get the documentation you need. Get a signed GP sick note most same day, all by 9AM next morning. No appointment needed.

✔ PTSD, complex PTSD, trauma-related conditions and acute stress responses all covered.
✔ Treated with full clinical sensitivity and confidentiality.
✔ Most same day. All by 9AM next morning. From £47.
✔ Full refund if the GP cannot issue.

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UK GMC Doctors

Need ongoing support documentation? See also our mental health support letter and stress leave certificate.

Get your medical certificate delivered straight to your inbox from £37

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GMC Registered Doctors
Information Commissioner's Office
In partnership with NHS Doctors


How It Works

01

Complete a short online questionnaire

No appointment required. Complete a short medical questionnaire and upload any supporting evidence.

02

Doctor reviews your evidence

A GMC-registered doctor reviews your submission individually. No automated approvals.
✔ Full refund if the GP cannot issue.

03

Receive your certificate

Certificates arrive most same day, all by 9AM next morning, delivered as a signed PDF direct to your inbox.

Sick Note for PTSD

Post-traumatic stress disorder (PTSD) is a serious mental health condition that develops after exposure to a traumatic event or series of events. It is a recognised basis for a sick note in the UK — a GMC-registered doctor can certify that your PTSD symptoms are preventing you from working, in exactly the same way as any physical illness.

MedicalCert issues PTSD sick notes same day, online, through GMC-registered UK doctors. No GP appointment or waiting room required. Submit before 9pm and receive your certificate the same day.

PTSD sick note vs complex PTSD vs mental health support letter: A sick note for PTSD certifies a specific period of absence from work. Complex PTSD (C-PTSD) — which develops from prolonged or repeated trauma rather than a single event — is covered by the same process; the doctor will certify the functional impact on work capacity regardless of the specific subtype. A mental health support letter documents your condition for ongoing purposes such as housing, university, or workplace adjustment requests without certifying absence.

For general guidance covering the 7-day rule, sick pay, SSP April 2026 changes, your legal rights, and what the certificate contains, see our mental health sick note guide. This page covers what is specific to PTSD.


PTSD Symptoms That Affect Fitness for Work

PTSD affects people in highly individual ways. A doctor assesses not just whether you have a diagnosis, but how your specific symptoms are impairing your ability to do your job. The following are common functional impairments considered in a PTSD fitness-for-work assessment:

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Flashbacks and intrusive memoriesInvoluntary re-experiencing of the traumatic event that interrupts concentration, decision-making, or the ability to engage with work tasks.

Hypervigilance and startle responsePersistent state of alertness that makes a normal working environment — including noise, crowds, or open-plan offices — severely distressing or unsafe.

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Avoidance of triggersActive avoidance of people, places, conversations, or tasks that trigger traumatic memories — potentially including specific colleagues, workplaces, or job duties.

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Sleep disturbance and nightmaresSevere insomnia or recurring nightmares causing exhaustion that makes attendance or safe performance of duties impossible.

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Cognitive impairmentDifficulty concentrating, memory problems, and dissociative episodes that impair judgement, communication, and the ability to complete work tasks safely.

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Emotional dysregulation and angerIntense emotional responses or irritability — particularly relevant in roles involving public contact, team management, or safety-critical environments.

PTSD caused by a workplace incident: Where your PTSD was caused or worsened by events at work — such as an assault, accident, harassment, or traumatic incident — your employer has an additional duty of care. A sick note documents the incapacity; a separate occupational health referral or legal claim may also be appropriate in these circumstances.


PTSD as a Disability — Your Equality Act Rights


Reasonable Adjustments for PTSD at Work

A sick note for PTSD can include recommendations for workplace adjustments to support a safe return. ACAS guidance identifies the following types of adjustments as appropriate for mental health conditions including PTSD:

Quiet, private workspace to reduce sensory overload and unexpected interruptions
Flexible or remote working to avoid triggering environments (commutes, open plans, specific locations)
Phased return — extended, gradual build-up of hours
Agreed advance notice of meetings, changes, or site visits to reduce unexpected demands
Written communication preferred over unplanned verbal contact
Temporary reallocation away from specific duties, colleagues, or locations that act as triggers
Absence trigger flexibility — PTSD flare-ups should not be counted against attendance records
Time off for therapy or trauma treatment appointments without requiring annual leave

If you need documentation specifically focused on workplace modifications rather than absence certification, a work adjustment certificate provides a more detailed clinical framing for adjustment requests.


PTSD Sick Note FAQs

There is no fixed maximum. PTSD absence is determined by clinical assessment of your symptoms and their impact on work capacity. Because PTSD can be episodic and non-linear in recovery, absence periods vary significantly. Some people return after several weeks with appropriate adjustments; others with severe or complex PTSD may require months of certified absence. In the first six months, a fit note can cover up to three months at a time. SSP is available for up to 28 weeks. From 6 April 2026, SSP becomes payable from day one of absence under the Employment Rights Act 2025.
No. A formal diagnosis of PTSD is not required. The doctor assesses your current symptoms — flashbacks, hypervigilance, avoidance, sleep disturbance, cognitive impairment — and their functional impact on your ability to work. If your symptoms are clinically significant and impairing your work capacity, a certificate can be issued where appropriate. If you do have a prior diagnosis or are receiving treatment, include this information in your consultation as supporting evidence.
Commonly yes. PTSD qualifies as a disability under the Equality Act 2010 if it has had a substantial and long-term adverse effect on your ability to carry out normal day-to-day activities for 12 months or more, or is likely to. This covers difficulties with concentration, travel, social interaction, sleep, and working. The test is based on functional impact, not diagnosis. Recurring PTSD — where episodes come and go — can still qualify if the long-term overall picture meets the test. Where the threshold is met, your employer must consider reasonable adjustments and cannot discriminate against you.
Yes, potentially significantly. Where PTSD arises from a workplace incident — an assault, accident, harassment campaign, or other traumatic event at work — your employer may have breached their duty of care under health and safety law, separate from the Equality Act. A sick note documents your incapacity for employment purposes. A separate occupational health referral, grievance, or personal injury claim may also be appropriate. You should consider taking employment law or personal injury advice in parallel. Documenting the timeline and circumstances clearly is important — a sick note provides medical evidence of the incapacity, but further documentation may be needed for any legal claim.
Yes. PTSD affecting your ability to study, attend, sit exams, or meet academic deadlines is a valid basis for medical documentation at university. See our dedicated pages for a university sick note or a student mitigating circumstances letter — these are framed for academic contexts and follow the evidence formats most universities accept for extenuating circumstances.
For further questions about employer obligations, sick pay, private vs NHS certificates, and backdating, see the mental health sick note FAQ.