Get a Sick Note for Sinusitus
Sinusitis is a valid reason to take time off work, issued by a UK GP without leaving home.
Severe sinusitis can make it impossible to concentrate, sleep or work. Get a signed GP sick note most same day, all by 9AM next morning. No appointment needed.
✔ Covers acute sinusitis, chronic sinusitis and related sinus infections.
✔ Accepted by UK employers for work absence documentation.
✔ Most same day. All by 9AM next morning. From £47.
✔ Full refund if we can't issue one.
Get my sick note 
Dr Maria Knobel Medical Director Ready to return? You may also need a fit to work certificate before your employer allows you back.
Get your medical certificate delivered straight to your inbox from £37
How It Works
Complete a short online questionnaire
No appointment required. Complete a short medical questionnaire and upload any supporting evidence.
Doctor reviews your evidence
A GMC-registered doctor reviews your submission individually. No automated approvals.
✔ Full refund if the GP cannot issue.
Receive your certificate
Certificates arrive most same day, all by 9AM next morning, delivered as a signed PDF direct to your inbox.
Very happy, I ordered my Medical Certificate in the early morning hours and before noon time of same day I had it on my inbox. Speedy service and they present the health condition precisely, get to the point.
They meet the incredibly fast turnaround stated (certificate/letter sent before 9am the following morning if the doctor feels that a letter/certificate is appropriate) which is incredibly quick and I am really grateful for the help provided!
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This was my second time using Medical Cert, and once again the service was exceptionally quick and professional. Everything was handled efficiently, with clear communication throughout.
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Fast efficient service for medical certificates. I used the not fit to fly service and was provided with a certificate the next day, the price is very reasonable and enabled a flight credit refund with my airline. Would recommend and would use again if needed.
A fast and efficient service. It wasn't complicated and the Fit-to-fly note was accepted by the Airport without any further questions. Thank you.
Ideal for me, I am looking to get a certificate for some medical issues I have. So this is the perfect solution for me, uploading docs was easy and the forms very straightforward to fill in. Will definitely use them again. Many thanks.
Excellent service. Easy to use and certificate issued in less than 24 hours. £39 as opposed to the £150 my GP charges. Highly recommended.
Quick and reasonably pain-free. Received their standard certificate as well as my requested bespoke certificate, by email, by 9am the following morning. Both completed properly, signed and stamped as required. More expensive than my GP, but infinitely quicker and easier.
One of the best experiences. It's easy to get a GP note.
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Yes — You Can Get a Sick Note for Sinusitis
Sinusitis can be genuinely debilitating — the facial pain, pressure, blocked nasal passages, and fatigue it causes can make it impossible to concentrate, sit at a screen, or function at work. If you are off with sinusitis and your employer needs medical documentation, a GMC-registered doctor can certify your absence. You do not need to see a specialist or have a formal diagnosis confirmed by a hospital — a clinical assessment of your symptoms is sufficient.
Can I get a sick note for sinusitis?
Yes. Sinusitis is a recognised medical condition and a valid reason for certified sick leave. A GMC-registered doctor can assess your symptoms and issue a fit note covering your absence — the same process as for any other illness. You can get one through MedicalCert the same day, entirely online, without a GP appointment.
MedicalCert issues sinusitis sick notes through GMC-registered UK doctors. Same day. No waiting room, no appointment, no commute when you already have a pounding headache.
Why Sinusitis Can Warrant a Sick Note
Sinusitis — inflammation of the sinuses, usually following a cold or upper respiratory infection — is commonly misunderstood as a minor condition. Acute sinusitis causes symptoms that can make sustained work genuinely impossible, particularly for roles involving concentration, communication, or screen use:
Chronic sinusitis — where symptoms persist for more than 12 weeks — can also be certifiable where it causes ongoing impairment of function. A doctor assesses what you can and cannot do, not just whether you have been formally diagnosed.
Acute vs chronic sinusitis — does it make a difference for a sick note?
Acute sinusitis — sudden onset, typically following a cold, lasting up to 4 weeks — is the most common presentation. Most sick notes for sinusitis cover an acute episode. The certificate will typically say “acute sinusitis,” “acute rhinosinusitis,” or “upper respiratory tract infection with sinusitis.”
Chronic sinusitis — persistent symptoms lasting 12 weeks or more — can be certified for more extended periods where the ongoing impact on function is documented. If your sinusitis is chronic, note the duration and any treatment you have had when completing the consultation.
When Do You Need a Sick Note for Sinusitis?
The rules for sinusitis are the same as for any other illness. For the first seven calendar days of absence you can self-certify — simply inform your employer you are unwell, no doctor’s note required. From day eight onwards, your employer can request a fit note from a GMC-registered doctor.
Some employers have their own absence policies that require documentation earlier — particularly if you have had multiple short-term absences. If your employer has asked for a note for a sinusitis absence of under seven days, a private certificate from MedicalCert is fully accepted.
What your sinusitis sick note includes
- ✔Your full name, date of birth, and contact details
- ✔Diagnosis — typically “acute sinusitis,” “rhinosinusitis,” or “upper respiratory tract infection”
- ✔Certified period of absence — start and end date
- ✔“Not fit for work” or “may be fit for work” assessment as appropriate
- ✔GMC registration number of the signing doctor
- ✔Unique QR code for employer verification
How Long Can You Be Signed Off for Sinusitis?
Most acute sinusitis episodes resolve within 2–3 weeks with appropriate treatment. A sick note will typically cover the period during which symptoms are severe enough to prevent work — commonly 7–14 days for an acute episode. If symptoms persist beyond the initial certificate period and you remain unfit, a new certificate can be issued to extend the cover.
For chronic sinusitis with recurrent acute flare-ups, certificates can cover individual episodes or longer periods depending on the clinical picture. Where sinusitis has required surgery (such as functional endoscopic sinus surgery), the post-operative recovery period can also be certified.
Sick pay — what you are entitled to
From 6 April 2026 under the Employment Rights Act 2025, Statutory Sick Pay (SSP) is payable from the first day of certified absence. The previous three-day waiting period has been abolished. SSP is paid at £123.25 per week or 80% of average weekly earnings, whichever is lower, and all employees now qualify regardless of income.
Your employer may offer enhanced contractual sick pay above SSP — check your employment contract. SSP is the legal minimum.
How to Get a Sinusitis Sick Note Online — Same Day
When sinusitis is at its worst — head pounding, face aching, unable to think straight — the last thing you need is a GP waiting room. MedicalCert is fully online.
Complete the online consultation
Describe your symptoms — facial pain, blocked sinuses, headache, duration, and how they are affecting your ability to work. Note any previous diagnosis of sinusitis or current treatment. The doctor will assess your fitness based on this information.
GMC-registered doctor reviews your case
A doctor reviews your submission the same day and assesses whether the clinical picture supports issuing a fit note. If a certificate cannot be issued, you receive a full refund.
Certificate to your inbox
Your signed certificate arrives same day (submit before 9pm) or by 9am the following morning. Forward directly to your employer or HR. The QR code allows instant verification.