Autoimmune disease affects 50 million Americans. It occurs when the body’s immune system attacks healthy cells and tissues by mistake. Rheumatologist Benjamin Plotz, MD, discusses the causes and symptoms, and why some autoimmune diseases are hard to treat. Watch now via @fox5dc. Learn more: https://bit.ly/3NBMFuR

In Health Watch, March is Autoimmune Disease 
Awareness Month. As we wrap up this month, we want to take a look at some of the 
causes and symptoms of some of the most common conditions. Joining us now to do 
that is MedStar Health’s Dr. Benjamin Plotz. Good morning to you, Dr. Plotz. Thank you for 
joining us. Hi, good morning. Great to be here. Let’s start with the basics here. What is an autoimmune disease? So you know, an autoimmune disease is when our 
immune system, which usually does a great job of protecting us from germs, bacteria, viruses, like 
COVID, for example, when instead of attacking those foreign pathogens, it ends up attacking certain 
parts of our body and ourselves. Do we know why the immune system does that why it suddenly 
starts to attack the healthy cells? That’s a great question and you know the short answer is we 
actually still don’t know. It’s still a very active area of research. One of the popular theories today 
though is that it’s called the two-hit hypothesis where we know there are some people who are more 
predisposed to have an autoimmune disease. For instance, we know that women are twice as likely 
compared to men to have an autoimmune disease. So you know these people may have then some sort 
of environmental exposure. Maybe an exposure to a chemical or a certain infection which would 
then kind of trigger the immune system, kind of push a button and cause dysregulation, 
which could lead to an autoimmune disease. Yeah, I think people would be surprised to know 
just how how many people, millions of people, are affected by an autoimmune disease. Let’s go into 
the the top four most common ones. What are they? Absolutely, so you know as a rheumatologist, we 
see a certain set of autoimmune diseases. Some of the most common diseases that we see are 
rheumatoid arthritis, for example, which affects one percent of Americans and causes lots of pain 
and swelling in your hands. We also see a lot of lupus which affects, unfortunately, a lot of 
young women and can be very serious and can affect their kidneys leading people to go on dialysis 
or can even in very bad cases lead to death. There are other sets of diseases that we treat. 
Psoriatic arthritis affects, which is an arthritis, that affects people with psoriasis and ankylosing 
spondylitis, which can affect typically young men in the bones, in their back. You know considering 
how common these are and the medical advancements that we’ve seen. Just in general why 
are these conditions so hard to treat, even with lupus? I’ve heard so many stories where ultimately 
these people are just left frustrated. That’s a great question and part of the trouble 
with treating autoimmune diseases is we’re not we’re not treating something like a bacteria or 
a virus where you can give medication that just targets that sort of foreign pathogen. Instead,
you’re actually fighting with your own immune system. So as a rheumatologist, we really have 
to strike a balance of weakening the immune system so that we can turn down the volume, so to 
speak, on the autoimmune disease and control it without turning it down too much and we can 
still allow the immune system to do its healthy functions and keeping us, you know, protected from 
the outside world. It’s such a fine balance and as you know the pros and cons to all of that 
and I’m sure as you know this is just the tip of the iceberg as far as how much more there is 
to know when it comes to autoimmune diseases. MedStar Health doctor Benjamin Plotz, appreciate 
your time this morning and insight. Thank you.