Windsor doctors seeing rise in rare flu-related muscle condition in children

CTV News

2 days ago

Health professionals in Windsor-Essex are reporting an uptick in a rare side effect of influenza — one that may leave kids suddenly limping or unable to walk.
Benign acute childhood myositis is a temporary but painful muscle inflammation that typically follows viral infections like the flu.
It most commonly affects school-aged boys, often triggering sudden calf pain and difficulty bearing weight.
'We've noticed more cases than usual this flu season,' said Dr. Jane Philip, a pediatrician at Windsor Regional Hospital, says they have noticed more cases than usual this flu season.
'We get more concerned if parents are noticing children having issues with walking, limping, or refusing to walk altogether. That's an indication we've gone past the initial viral infection into a muscle inflammation picture.'
Philip said early signs include fever, cough, and fatigue.
'Patients will complain of things like calf pain or muscle tenderness,' she said.
The condition is typically short-lived and treated with fluids and pain relief — but Philip urges families to take symptoms seriously.
'If they're having prolonged episodes of not being able to ambulate, complaining of calf tenderness or weakness, or not being able to get up and move, they need to be evaluated in the emergency room,' she said.
While the childhood version is temporary, the broader term myositis also refers to a family of rare chronic conditions, some of which affect adults for life.
Rod Jansen, vice president of Myositis Canada, was diagnosed with Inclusion Body Myositis (IBM) at age 73 after years of unexplained falls and weakness.
'My T-cells are attacking my own muscles and destroying them,' he explained.
'It's very debilitating. I use a walker, or a scooter and I can't visit friends anymore — most homes aren't accessible.'
Jansen said awareness is key.
'When I was diagnosed, I had no idea what it was. Most doctors don't know it. It often takes people years to get answers.'
Myositis Canada connects patients with peer support and monthly meetings.
It also advocates for greater research.
'World Myositis Day is Sept. 21,' said Jansen.
'We're hoping to light up Niagara Falls to raise awareness. People need to know this disease exists — because many are living with it and don't even know the name yet.'
(With files from AM800s Rusty Thomson)