Your data on MRCVSonline
The nature of the services provided by Vision Media means that we might obtain certain information about you.
Please read our Data Protection and Privacy Policy for details.

In addition, (with your consent) some parts of our website may store a 'cookie' in your browser for the purposes of
functionality or performance monitoring.
Click here to manage your settings.
If you would like to forward this story on to a friend, simply fill in the form below and click send.

Your friend's email:
Your email:
Your name:
 
 
Send Cancel

Storm Aileen prompts atypical myopathy warning
Atypical myopathy is caused by the toxin hypoglycin A, found in sycamore seeds.

Horse owners urged to take extra precautions

In the aftermath of storm Aileen, horse owners are being urged to take extra precautions to keep their horses safe from Seasonal Pasture Myopathy (SPM).

The British Equine Veterinary Association (BEVA) says that after the major storms of 2014, there was a ‘big spike’ in cases of the disease, also known as atypical myopathy.

BEVA believes that high winds may cause sycamore seeds to fall earlier than usual this year. As such, the organisation has issued advice to horse owners to help them identify sycamore trees on or near grazing land and prevent the seeds falling where horses can reach them.

“In 2014 we saw a big spike in Seasonal Pasture Myopathy in the aftermath of storms hitting the UK. It’s a terrible condition that can be fatal despite treatment,” said Mark Bowen, senior vice president of BEVA.

“It’s easier to spot the sycamore’s maple-shaped leaves now while they are still on trees. Otherwise the seeds may be confused with ash keys. It’s best to speak to your vet for practical advice on how to keep your horse safe.”

Highly fatal in horses, SPM is a muscle disease caused by the toxin hypoglycin A, which is found in sycamore seeds.

While not directly palatable to horses, sycamore seeds can be ingested by horses when they are grazing on poor quality pasture. Equines most susceptible to SPM are kept in sparse pastures with an abundance of dead sycamore leaves, dead wood and no access to supplementary hay or feed.

To reduce the risk of their horses contracting SPM this season, horse owners are advised to:

  • Ideally move horses off pasture at times of risk

  • Restrict access to seeds by using temporary fencing

  • Ensure horses have access to good quality uncontaminated pasture

  • Provide consistent access to clean, palatable hay or haylage to minimise the risk of horses being tempted to ingest seeds

  • Do not fell trees, since doing so can lead to massive pasture contamination, further increasing the risks to horses

  • Discuss the risks and how to identify early clinical signs of SPM with your veterinary surgeon

  • Be aware that a field without sycamore trees can still contain seeds spread by high winds or flood water.

Become a member or log in to add this story to your CPD history

Webinar to explore AMR in vet dentistry

News Story 1
 The WSAVA has invited veterinary professionals to a webinar on responsible antibiotic usage in dentistry.

On 19 November 2025, at 1am, Dr J Scott Weese and Dr Brooke Niemiec will share the latest advice for antimicrobial use. They will present research on oral bacterology, and explain how attendees can choose appropriate antibiotics.

The session will cover pre-, intra- and post-operative guidelines, with recommendations for various pathologies.

The webinar is designed to support veterinary professionals to make informed decisions and tackle antimicrobial resistance.

Attendees can register here

Click here for more...
News Shorts
Bluetongue reaches Wales for first time in 2025

The Animal and Plant Health Agency (APHA) has revealed that bluetongue has been confirmed in Wales for the first time in 2025.

In their latest statistics, APHA records a total of 109 cases of BTV-3 or BTV-8 in Great Britain in the 2025-2026 vector season.

The total number of BTV-3 cases in Great Britain this season is 107. This includes 103 cases within the England restricted zone and four cases in Wales.

There has also been two cases of BTV-8, which were both in Cornwall.

As a result of the cases in Wales, a Temporary Control Zone (TCZ) is enforced in Monmouthshire. Animals can move freely under general license within the England Restricted Zone, however animals with suspected bluetongue must stay on their holding.

All premises testing positive for blue tongue can be viewed on this map.