Jeffrey Dahmer’s Polymyositis Diagnosis Doesn’t Match What We’re Told He Did

Jeff Dahmer was diagnosed with polymyositis in 1988, a debilitating autoimmune disease that progressively weakens the muscles.

But there’s a problem…

That diagnosis doesn’t match what we’re told he did.

NOTE: This is not a true crime site. It’s an examination of the Dahmer case through publicly available records.

Polymyositis is not a mild condition

Polymyositis causes progressive muscle weakness, especially in the shoulders, hips, and neck—areas required for lifting, carrying, and sustained physical activity. Patients struggle with basic tasks like climbing stairs, lifting objects, standing for extended periods, and maintaining physical coordination.

Over time, the condition worsens. In advanced cases, it puts patients in a wheelchair. In fact, at times, Jeff Dahmer needed a wheelchair just to appear in court.

Polymyositis is not a condition someone functions normally with.

Jeff Dahmer seated in a wheelchair
Jeff Dahmer appeared in court using a wheelchair

Jeff Dahmer was diagnosed with polymyositis in 1988

According to buried medical documentation, Jeff Dahmer was diagnosed with polymyositis in 1988. So the diagnosis itself isn’t in dispute.

In the below document written by clinical psychologist Kathleen P. Stafford and prepared for the Ohio trial in 1992—Jeff Dahmer is said to have been on Prednisone for “joint pain” as far back as 1988.

The report doesn’t use the word polymyositis. (Dr. Fosdal does name it as polymyositis during the 1991 trial, as you shall see.) However, joint pain is a known symptom, especially when the disease spreads to connective tissue.

Psychiatric competency evaluation for Jeffrey Dahmer dated April 6, 1992, mentioning Prednisone treatment for joint pain and prior hospitalizations.

Dr. Fosdal Names it as polymyositis

The note below comes from a set of psychiatric reports compiled during Jeff Dahmer’s court proceedings. Click to enlarge and read the last paragraph. Sorry about the quality. But, you can make it out.

Dr. Fosdal confirmed during trial testimony that Jeff had been prescribed steroids—specifically Prednisone, the go-to treatment for polymyositis. At that point, Jeff had been taking it for about a year to manage chronic inflammation in his shoulder.

This confirms the diagnosis wasn’t speculative—it was documented, and places the condition squarely within the timeline of the alleged crimes.

Had polymyositis for about one year – shoulder – was on Prednisone, 1 tablet a day for one year.

Jeff Dahmer had trouble getting up from a chair

In this trial footage, Jeff Dahmer is the last to rise, and places his forearms on the table for support. This kind of bracing is consistent with reduced strength in the hips and thighs—the muscle groups most affected by polymyositis.

This is exactly the kind of movement the condition produces.

Jeff Dahmer's Rheumatologist & The Halcion Prescription

Given the polymyositis diagnosis, it makes sense that Jeff Dahmer would be under the care of a rheumatologist—a specialist in muscle and autoimmune diseases.

A prescription for Halcion written by Dr. Bruce S. Hong confirms that he was under specialist care at the time he was supposedly committing the crimes—though this detail was omitted during trial proceedings.

Prescription written for Jeff Dahmer by Dr. Bruce S. Hong on June 21, 1991, for Halcion 0.25 mg, a sedative medication.
Jeff Dahmer Halcion Prescription – June 1991

The Questions No One Dared Ask

Why was Jeff’s condition never introduced at trial? Why is the only medical mention of it buried in two obscure documents? And most importantly…

How was Jeff Dahmer supposed to drag full-grown men across the floor, saw through joints, and dispose of remains with a disease that occasionally left him in a wheelchair?

Polymyositis is also immunosuppressive. So even if he were physically able to carry out the crimes attributed to him, how did he avoid infection? Rotting flesh, open wounds, biohazard conditions in a small apartment—and he never got sick?

To sum up…

If the diagnosis is real, the behavior doesn’t fit.
If the behavior is real, the diagnosis doesn’t fit.

Either way, the story doesn’t hold together.

faq

Did Jeff Dahmer really have polymyositis?

Yes. Buried trial documents confirm Jeff Dahmer was diagnosed with polymyositis, an autoimmune disease that weakens muscles. At times, it left him needing a wheelchair, directly contradicting the violent feats he was accused of.

How does polymyositis disprove the Dahmer story?

Polymyositis makes basic movement difficult — lifting, dragging, or sawing would have been impossible. The disease shows Jeff Dahmer could not have carried out the brutal acts he was accused of.