An antibody infusion for flares of generalised pustular psoriasis
Spesolimab
An antibody medicine used to treat flares of generalised pustular psoriasis, a rare and serious skin condition.
What is Spesolimab?
Spesolimab is a specialist antibody medicine used to treat flares of generalised pustular psoriasis, a rare condition in which the skin breaks out in widespread pus-filled spots and the person can become very unwell. It is given as a drip into a vein in hospital to calm a flare. It works by blocking a receptor for a chemical messenger (IL-36) that drives the condition. The most important safety concerns are a raised risk of serious infections and reactions to the infusion, including a severe whole-body reaction called DRESS, so people are checked for infections such as tuberculosis beforehand.
Education and reference only. This is a plain-language guide to Spesolimab — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Spesolimab is a biologic medicine, a type of antibody, used to treat flares of generalised pustular psoriasis in adults. This is a rare and serious form of psoriasis in which the skin suddenly develops widespread pus-filled spots, often with fever and feeling generally unwell, and it can need hospital care. Spesolimab is given as an infusion (a drip) into a vein, usually in hospital, to bring a flare under control. It targets part of the immune pathway that drives the condition rather than treating ordinary plaque psoriasis.
How it works
Generalised pustular psoriasis is driven in large part by a signalling pathway involving a chemical messenger called interleukin-36 (IL-36). Spesolimab is an antibody that blocks the IL-36 receptor, switching off this overactive inflammatory signal, which calms the flare and helps the skin settle. Because it dampens part of the immune system, it can make infections more likely, which is why people are checked for hidden infections beforehand. It is given as an infusion to treat a flare, with the option of a further dose if the flare has not settled enough.
Company & origin
Originated / developed by: Specialist manufacturer.
A specialist hospital medicine used in the UK to treat flares of generalised pustular psoriasis, a rare and serious skin condition.
Practical use
How to take Spesolimab
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- It is given as an infusion (a drip) into a vein by a specialist team, usually in hospital, to treat a flare.
- Be checked for infections, including tuberculosis, before treatment, as it can make infections more likely.
- Tell the team straight away about any fever, cough, rash or feeling unwell, during or after treatment.
- Stay where you can be monitored during and after the drip, as infusion and allergic reactions can occur.
- Avoid live vaccines around the time of treatment unless your specialist advises otherwise.
Weighing it up
Advantages & disadvantages of Spesolimab
Advantages
- Specifically treats flares of generalised pustular psoriasis, a rare and serious condition.
- Targets the IL-36 pathway that drives the condition, often settling a flare quickly.
- Given as a hospital infusion where people can be closely monitored.
Disadvantages
- Raises the risk of serious infections because it dampens part of the immune system.
- Can cause infusion reactions, including a serious whole-body reaction called DRESS.
- Given in hospital as a drip, and needs checks for infections such as tuberculosis beforehand.
Practical use
Good to know
The most important things to understand are about safety. Because spesolimab dampens part of the immune system, it raises the risk of serious infections, so before treatment people are checked for infections including tuberculosis, and any signs of infection such as fever, cough or feeling unwell should be reported. The other key concern is reactions to the infusion: these range from mild reactions during the drip to a serious whole-body reaction known as DRESS (a drug reaction with rash, fever and effects on internal organs), which is why treatment is given where people can be monitored. It is specifically a treatment for flares of generalised pustular psoriasis, given in hospital, not a routine treatment for everyday psoriasis. Live vaccines are generally avoided around treatment. The specialist team explains what to expect and watches closely during and after the infusion.
Who should not take it / use with caution
- People with a serious or active infection, including untreated tuberculosis, should not be treated until it is dealt with.
- People who have had a serious allergic reaction to spesolimab should not receive it.
- It is used with care, and only under specialist guidance, in pregnancy and breastfeeding.
Monitoring
- Checking for infections, including tuberculosis, before treatment starts.
- Watching closely for infusion and allergic reactions during and after the drip.
- Monitoring for signs of infection and for the serious DRESS reaction after treatment.
Side effects
- A higher risk of infections, some of which can be serious.
- Infusion reactions, ranging from mild to, rarely, a serious whole-body reaction called DRESS.
- Tiredness, itching or reactions where the drip is given in some people.
Key interactions
- Live vaccines are generally avoided around the time of treatment because the immune system is dampened.
- Other medicines that suppress the immune system may add to the infection risk, so tell your team about them.
- Tell your specialist about all your medicines so the overall risk can be judged.
Available as: A solution given as an infusion (a drip) into a vein.
Answers
Spesolimab: frequently asked questions
What is spesolimab used for?
It is used to treat flares of generalised pustular psoriasis, a rare and serious form of psoriasis in which the skin breaks out in widespread pus-filled spots.
How is it given?
It is given as an infusion (a drip) into a vein by a specialist team, usually in hospital, to bring a flare under control.
Why am I checked for tuberculosis first?
Spesolimab dampens part of the immune system and can make infections more likely, so people are checked for hidden infections such as tuberculosis before treatment.
What is the most serious risk?
The main concerns are serious infections and infusion reactions, including a severe whole-body reaction called DRESS, which is why treatment is closely monitored.
Is it for ordinary psoriasis?
No. It specifically treats flares of generalised pustular psoriasis, not everyday plaque psoriasis.
The wider class
About Anti-IL-36-receptor antibody (generalised pustular psoriasis)
Spesolimab belongs to the anti-il-36-receptor antibody (generalised pustular psoriasis) class. For how the class as a whole works, its shared safety principles and monitoring, see the full guide.
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Authoritative sources
- BNF
- NICE CKS
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