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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Profile picture for tiredoflc @tiredoflc

@lkirnbauer

I agree, as there is noticeable joint pain associated after eating gluten for me as well
It is hard to do sometimes as so many foods have these categories in them
I still wonder what is going on for these foods and also histamine in foods (tomatoes, celery) that are wrecking havoc, when just a few months ago werr not or never were a problem. Is it immune system mediated? So much happening for so long, Would love to have a clear system even for just a few days!

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@I'm right there with you. My immune system went haywire after COVID in 2021. Things that never bothered me now cause me to itch all over - foods and beverages with a lot of histamine, over the counter vitamin supplements (even if they are hypo-allergenic), gluten now causes breathing difficulties. I do think it's the immune system.

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Profile picture for lkirnbauer @lkirnbauer

I have Long Covid and in my opinion, tendon pain comes from what you’re eating. I have given up eating gluten, dairy, soy and seed oils and it’s made a huge difference in my joints. My husband loves bread and anything to do with Gluten. He tried eliminating it and his joints felt so much better! What I’ve learned is that most people won’t give up eating these foods because they enjoy them so much, but if you want to really feel better, try it for a few months. You’ll be amazed!

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@lkirnbauer Same for me...all pain increases with gluten, dairy, sugar, corn products and cheese with mold (like blue cheese). Never had food allergies like this until COVID. And red wine gives me bright red cheeks now! I am on 24 hour allergy pills to stop H1 -alone it does not stop the complete over production of mast cells but I prefer not to take a H2 blocker like Pepcid which helps but minimizes the acid in my stomach needs to digest food.

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I'm also struggling with tendon pain and the overall life altering effects of LC. The tendon pain in my ankles has been going on since my last Covid infection over 6 months ago (I've had it 3 times with the 1st and 3rd infections being the worst). I've had complex, chronic pain with paresthesias, muscle pain, joint pain, and this tendonitis pain. My PCP has a laundry list of blood tests, none abnormal, won't refer me to a specialist because there is no "identifiable cause" for my symptoms. Aside from the pain this disease ravaged my body and brain and the frustration of it all is sometimes worse than the physical symptoms. I wish you the best with your specialty appointments. I wish for us all that LC research will improve and someday provide insight and answers for what is affecting us, crippling us and upending what had been otherwise normal, healthy lives.

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I’ve had more tendinitis since having Covid in 2020 and 2021. I feel like I’m constantly stretching to relieve it. Yoga is helpful too. I pretty much attributed it to getting older, but it did escalate after being infected with Covid.
I wish you all the best!

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Profile picture for celia16 @celia16

What type of doctor should I see? I have an appointment with a rheumatologist. It was made last year right after my initial visit with the rheumatologist. She ruled out autoimmune disorders then. Now, I have new symptoms with the ankle and shoulder pain. Not really sure if she’s who I should see.

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@celia16
Sports Medicine doc

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For me the connection between Long COVID and worsened tendinitis is Ehlers-Danlos Syndrome, which I first heard of in Dr Teitelbaum's book _From Fatigued to Fantastic_ but have had all my life. LDN, photobiomodulation, and a slew of nutritional supplements have all helped me a great deal, and I now have less connective-tissue pain than I did before COVID.

(I'm posting this information to alert others to the overlap between pre-existing hypermobility/connective-tissue issues and Long COVID. It doesn't sound as if EDS is what's going on for the person who posted this question since that person's tendinitis is confined to a specific location and is due to a structural abnormality.)

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Before Covid in 2020 (I was 73) I was hiking 5-10 miles in the mountains of southern Arizona. During Covid I could not digest food although my lungs were unaffected. I lost 25 pounds (200 to 175) in 10 days and lost 4 teeth due to calcium loss. During the next 11 months I worked up from 1 mile to 3 miles on flat ground. One day I tried 4 miles with about a gain of 200 feet in elevation. I felt unbearable pain in my left groin for the last mile and could not walk for several weeks afterward. I then spent 3 months in therapy at the VA and worked back up to 1 mile. Since then I have slowly increased my hikes and yesterday walked 9 miles with slight elevation gain. My goal is to hike 10 miles next week on my 80th birthday. I still have tendon problems in my left groin and x-rays show I have osteoporosis in my hips and knees although that pain is slight. Sometimes I will be sitting in a chair and feel unbearable pain in my left groin tendon (not pain in my hip) and have to wait until it subsides before I can stand up. This event is irregular, unpredictable and very annoying. I rarely but sometimes have the same symptoms in other joints. Anyone else have a similar hstory? Please poste here because when I tell my doctors, they just shrug their shoulders. fishwithak

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Profile picture for celia16 @celia16

I can relate. I was diagnosed with post covid syndrome due to smell/taste disorder, for which some has recovered in 2023. I’ve had other symptoms, but am not sure if related, but I have had the pain you describe on my right ankle. It’s intermittent and at times severe! I’ve seen my GP twice and an orthopedist who took x-rays. X-rays look good, so they don’t know the reason for the pain. It’s bizarre. It’s not an electric shock feeling. It doesn’t hurt more with weight bearing. It feels similar to a sprain, (bouts of pain and sore to the touch under the skin) though there is no swelling and it suffered no trauma. Trying to figure this out. I am glad the pain is decreasing. I did have a flare yesterday. My GP says he’ll help me with taping, if it continues to hurt. Also, Neurologist says no neuropathy in my feet, though I have paraesthesia, (Long story)

I also have similar pain in my right shoulder and clavicle. Though the pain isn’t as severe as ankle. I’ve been too busy to get it checked out, but I think it’s like my ankle. Oh, x-rays of ankle don’t show arthritis. Don’t think fibro.

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@celia16 Try Acupuncture. I did when I lost taste and smell. Took a long time but it helped. Also will help with arthritis. Now have tinnitus probably from covid again. I’d say long covid.

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Profile picture for gnana6 @gnana6

@celia16 Try Acupuncture. I did when I lost taste and smell. Took a long time but it helped. Also will help with arthritis. Now have tinnitus probably from covid again. I’d say long covid.

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@gnana6 , I’ve had acupuncture before for other things, so I know it can be quite beneficial. I would like to return, but it’s all out of pocket and can be expensive with a series of visits.

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Profile picture for fishwithak @fishwithak

Before Covid in 2020 (I was 73) I was hiking 5-10 miles in the mountains of southern Arizona. During Covid I could not digest food although my lungs were unaffected. I lost 25 pounds (200 to 175) in 10 days and lost 4 teeth due to calcium loss. During the next 11 months I worked up from 1 mile to 3 miles on flat ground. One day I tried 4 miles with about a gain of 200 feet in elevation. I felt unbearable pain in my left groin for the last mile and could not walk for several weeks afterward. I then spent 3 months in therapy at the VA and worked back up to 1 mile. Since then I have slowly increased my hikes and yesterday walked 9 miles with slight elevation gain. My goal is to hike 10 miles next week on my 80th birthday. I still have tendon problems in my left groin and x-rays show I have osteoporosis in my hips and knees although that pain is slight. Sometimes I will be sitting in a chair and feel unbearable pain in my left groin tendon (not pain in my hip) and have to wait until it subsides before I can stand up. This event is irregular, unpredictable and very annoying. I rarely but sometimes have the same symptoms in other joints. Anyone else have a similar hstory? Please poste here because when I tell my doctors, they just shrug their shoulders. fishwithak

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@fishwithak

Long COVID has definitely exacerbated my pre-existing tendinitis, though my trajectory and symptoms don't sound parallel to yours. My tendinitis is in my hands and wrists and is part of a whole-body weakness in connective tissue from undiagnosed Ehlers-Danlos Syndrome. I'm guessing that what we're both experiencing is post-viral inflammation expressing itself wherever we happen to be particularly vulnerable due to past injuries.

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