Last week, at my annual check-up, my internist reminded how rare dermatomyositis is. He told me he had not seen a patient with the autoimmune disease in his 30-year-plus career. That includes his stint as a pharmacist.
He also relayed my dermatologist’s reaction when he first diagnosed me: “You won’t believe what this guy you sent me has.”
Like my internist, my dermatologist has been in practice almost 30 years and has not seen more than a couple cases of dermatomyositis. That was why it took him about two months to come up with the correct diagnosis. If not for the woman with him that day, it may have taken him longer.
An Opinion from a Consulting Dermatologist
The day he diagnosed me in July 2018, another doctor was present. I cannot remember her name or her specialty. My internist last week explained she was some sort of a consulting physician on rare dermatological diseases.
After reviewing my case file, she examined my rashes. I told her and my dermatologist about the trouble breathing and my blood tests, which showed elevated antinuclear antibody. I mentioned my internist’s suspicion I had lupus.
She then asked if I had trouble walking up the stairs. I said no.
She again examined the rashes on my fingers, neck, and shoulders. I now know what she was looking for: Gottron’s papules and a shawl rash–both diagnostic indicators of dermatomyositis.
She then walked back toward the computer and exchanged words I could not hear with my dermatologist. Five seconds later, they approached the front of the exam chair and suggested dermatomyositis.
“What in the world is that?” I asked them.
Too Rare—Even for Dr. House
Being an insatiably curious House, MD fan with an Internet connection, I had heard of most common and obscure autoimmune diseases, from rheumatoid arthritis to sarcoidosis to Behçet’s.
Dermatomyositis is an autoimmune disease in which your immune system attacks your skin and muscles. It is among the rarest autoimmune diseases on the planet, affecting 16,000 people in the United States and as few as five in a million people worldwide. Dermatomyositis with little to no muscle involvement, such as mine, presents in only 5 percent of those cases.
Dermatomyositis makes only one appearance in all eight seasons of House: a passing suggestion from Dr. Lawrence Kutner when the team tries to figure out what killed former team member Dr. Amber Volakis (Season 4, Episode 16, “Wilson’s Heart.”). Of course, Dr. Kutner is wrong. I can’t help, however, thinking the writers missed a great opportunity for a final, correct diagnosis for another episode.
