Delayed Reaction

A week ago Friday, I checked an item off my health care to-do list when I got my pneumonia vaccination. For older adults, mine was Pfizer’s Prevnar 20, which stands for Pneumococcal 20-valent conjugate vaccine, in case you’re wondering. Basically, it covers a slew of bacterial strains, and as of current practice standards, I won’t need another pneumonia vax, ever.

It barely hurt, and I only had minor aches in my left shoulder for maybe 48 hours. No big deal.

Meanwhile, I’m still nursing nasty multiple ulcers in my left ring finger that have cost me a nail and considerable discomfort for at least six weeks, now, even as it slowly heals.

Thursday evening, after my shower, I noticed an odd, blotchy rash on my upper left arm. At first, I thought it could be hives, which I occasionally get from taking a shower. But the rash did not clear. In fact, it seemed to be spreading a bit.

Now, I have a history of cellulitis when I get infections in digital ulcers. Haven’t had an episode in quite a while, but this was my immediate concern. If you’ve ever dealt with this kind of superficial skin infection, then you know that it can get very dangerous if left unattended, with the potential, if it gets into the bloodstream, of causing sepsis.

Typically, when I’ve developed cellulitis, it spreads in a thick, red line from the ulcer up my forearm. I once had the experience of watching it spread at a rate of about an inch an hour. That landed me at the infusion clinic of my hospital, getting IV antibiotics.

So, even as this rash was in no way connected to my ulcer, I was still worried—indeed, worried enough to have trouble falling asleep, and rising to check if it was spreading several times. That is, until about 2:30 in the morning. I had traced the outline with an eyeliner pencil about an hour earlier and the rash hadn’t really moved. So I took a minocycline pill, which I always have on hand, and convinced myself to get some sleep. No way I was going to the ER to deal with it unless it seemed aggressive.

When I woke up Friday morning, there was no change in size, though the rash had filled in and was definitely warm. It suddenly occurred to me that this might be a reaction to the pneumonia vaccine. During Covid, I had twice developed a rash in my injected arm from the Moderna vax, though never from Pfizer. But this was a totally different shot. Sure enough, I found a few research articles online about delayed reactions to the Prevnar shots, though it’s quite rare (of course—I always get rare complications).

At 8:00 I called our geriatric practice and explained my concern, that I needed someone to determine if it was cellulitis or the vax reaction. I was prepared to spend half a day at Urgent Care, if necessary. So, here’s why I love our geriatric providers: they make house calls. And, it turns out, that even as our NP was not available, they could send a mobile urgent care team to our home. Which they did.

The team was great, and they confirmed my second hypothesis, that I was reacting to the shot, even as the rash was several inches below the injection site. The solution? Zyrtec. Which I started that day, and the rash is subsiding.

To say I’m grateful is an understatement. Fortunately, after four-plus decades of living with scleroderma, I know enough to know what to watch out for and how to get help. And I’m lucky to live where excellent help is available, right in my own home.

Evelyn Herwitz blogs weekly about living fully with chronic disease, the inside of baseballs, turtles and frogs, J.S. Bach, the meaning of life and whatever else she happens to be thinking about at livingwithscleroderma.com. Please view Privacy Policy here.

Image: Louis Reed