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Any connection between long COVID and tendinitis?

Posted by robindancer5678 @robindancer5678, Aug 6, 2025

Has anyone else had problems with their tendons after COVID? Background - I've had lots of weird symptoms since I had COVID and the boosters. Here's one I'm wondering about. I have had severe tendinitis for the past year in the peroneal tendons of both feet (those are the tendons on the side of your feet). COVID didn't cause it - this was due to me having extra bones in both feet (os peroneum) and not knowing it and doing excessive walking (miles). However - it's been a full year and I can't get rid of the tendinitis, even after surgery in one foot, lots of PT and now shockwave therapy, which WOW is very painful. I have great doctors from Hopkins. The surgeon suggests I may have developed neuropathy from the ongoing tendonitis. Now this is interesting because one of my weird long-COVID symptoms since 2023 has been nerve issues - intermittent burning, tingling, feeling like I am being electrocuted. I was worked up for fibromyalgia and small fiber polyneuropathy in 2023 and didn't meet the criteria fully for either, but was told my long-COVID is behaving like those two diagnoses. So - has anyone else experienced this?

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ronose26 | @ronose26 | 6 hours ago
In reply to @tkinder "Yes, I have been having tendonitis and various muscle/ tendon pain and injuries from Long Covid..." + (show)
Profile picture for tkinder @tkinder

Yes, I have been having tendonitis and various muscle/ tendon pain and injuries from Long Covid too, among many other symptoms. Post exertional malaise, autonomic nervous system dysfunction with tachycardia with minimal movement kept me from doing any kind of exercise. Initially I could barely walk around at all. I eventually could do slow paced short walks but nothing else and noticed muscle wasting with fat gain. Eventually I began to be able to do more butI kept getting over use tendon pain with small activity snd muscle aches. Once when pulling on a car seat adjustment bar I heard a pop and suffered rib separation. Prolonged standing resulted in gluteal tendonitis. Diffuse muscle pain and tendon pain has been common,
The thing that has helped me most was going on the antiviral drug , valacyclovir that I ran across when taking it for a cold sore noticed that the two doses helped me feel better. I had been taking 1gm twice a day until a trial off for a little over a week when the gluteal tendonitis ( made sleeping impossible) occurred and a flare of fibromyalgia like diffuse muscle and tendon pain and maybe joint pain too came during the time off. Within a few hours of starting back with a 2 gm dose of Valacyclovir the gluteal pain vanished and muscles improved. Continuing with the anti viral. Also take fish oil, co Q10, and Nattokinase, Magnesium glycinate and vitamin D and C.

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@tkinder
I was just talking to someone about whether Valacyclovir would work for my symptoms as they seem similar to yours … currently in the worst flair so far. Finally got an MRI so I know it’s not sciatica or a spinal issue. Severe pain (possibly tendenosis) radiating from labrum, rectus femoris , hamstring, and knee down to the ankle. I have a new PT consult tomorrow and referral to orthopaedic. Received only Janssen vax in July of 2021.

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Profile picture for ronose26
ronose26 | @ronose26 | 6 hours ago
In reply to @tkinder "Yes, I have been having tendonitis and various muscle/ tendon pain and injuries from Long Covid..." + (show)
Profile picture for tkinder @tkinder

Yes, I have been having tendonitis and various muscle/ tendon pain and injuries from Long Covid too, among many other symptoms. Post exertional malaise, autonomic nervous system dysfunction with tachycardia with minimal movement kept me from doing any kind of exercise. Initially I could barely walk around at all. I eventually could do slow paced short walks but nothing else and noticed muscle wasting with fat gain. Eventually I began to be able to do more butI kept getting over use tendon pain with small activity snd muscle aches. Once when pulling on a car seat adjustment bar I heard a pop and suffered rib separation. Prolonged standing resulted in gluteal tendonitis. Diffuse muscle pain and tendon pain has been common,
The thing that has helped me most was going on the antiviral drug , valacyclovir that I ran across when taking it for a cold sore noticed that the two doses helped me feel better. I had been taking 1gm twice a day until a trial off for a little over a week when the gluteal tendonitis ( made sleeping impossible) occurred and a flare of fibromyalgia like diffuse muscle and tendon pain and maybe joint pain too came during the time off. Within a few hours of starting back with a 2 gm dose of Valacyclovir the gluteal pain vanished and muscles improved. Continuing with the anti viral. Also take fish oil, co Q10, and Nattokinase, Magnesium glycinate and vitamin D and C.

Jump to this post

@tkinder
Did you know latent herpes- related viruses like chickenpox, mono, cytomegalovirus, shingles, etc. can reactivate when the immune system is flavored or is compromised????

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