The misleading symptoms that delayed Carly Simon’s neuro diagnosis—and when to reopen the differential
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That has been one of the hardest things to explain. It is not simply sadness or laziness. It is as though the part of the brain that sends out invitations to participate in life has temporarily misplaced the guest list.
—Carly Simon, in a statement to BBC
Singer-songwriter Carly Simon recently revealed that she has been living with Parkinson’s disease while also recovering from surgery for basal cell carcinoma.[]
For many physicians, Simon's diagnostic journey may sound remarkably familiar. According to Simon, her health problems initially appeared to be orthopedic: Arthritis in both knees and one hip led to multiple joint replacements; when she continued to struggle with walking afterward, she reportedly assumed the surgeries were to blame.
It wasn’t until a later evaluation that she was diagnosed with Parkinson's disease. She also disclosed treatment for basal cell carcinoma on her face, which contributed to her withdrawal from public life.
It's a recurring challenge in medicine: When new-onset symptoms are attributed to an existing diagnosis rather than prompting a fresh differential.
When one diagnosis hides another
Simon’s account illustrates a form of diagnostic anchoring. Her mobility problems were explained by advanced arthritis and related surgeries, but without expected symptom resolution, the underlying neurologic disease became apparent.
Older adults may frequently have multiple conditions impacting their mobility, including:
Osteoarthritis
Lumbar spinal stenosis
Peripheral neuropathy
Cerebrovascular disease
Medication adverse effects
Parkinsonian syndromes
The challenge is recognizing when the existing explanation no longer fits the clinical picture.
Parkinson's often begins before the classic tremor
Public awareness of Parkinson’s disease is still dominated by resting tremor, but many patients first develop subtler symptoms. It may be worth explaining early manifestations to your patients, including:[]
Bradykinesia
Reduced arm swing
Gait impairment
Rigidity
Micrographia
Constipation
REM sleep behavior disorder
Mental health issues including depression or anxiety
In a statement to BBC, Simon described progressive difficulty walking before receiving her diagnosis.[]She also spoke openly about fatigue, anxiety, depression, and apathy. These are symptoms that can significantly affect quality of life but are often underrecognized by both patients and their doctors.
“You can find yourself lying there like a starfish drying in the sun, arms pointing in all directions, while nothing inside is telling you to get up, read, watch, write, sing, call someone, or do much of anything at all. That has been one of the hardest things to explain. It is not simply sadness or laziness. It is as though the part of the brain that sends out invitations to participate in life has temporarily misplaced the guest list,” Simon wrote.[]
The overlap between orthopedic disease and neurologic disease
Orthopedic pathology can delay recognition of Parkinson’s disease because both conditions impair mobility.
A patient recovering from a hip or knee replacement may understandably attribute persistent gait abnormalities to the postoperative recovery period. Clinicians may do the same, particularly if imaging and orthopedic examinations appear reassuring.
Features that should prompt reconsideration include[]:
Progressive slowing despite appropriate rehabilitation
New asymmetry
Increasing rigidity
The loss of facial expression
Decreased arm swing
Difficulty initiating movement
Emergence of nonmotor symptoms
When these findings appear, referral for neurologic evaluation may uncover a neurodegenerative disorder rather than prolonged postoperative recovery.
Don’t overlook the nonmotor symptoms
Simon’s description also reinforces that Parkinson’s extends well beyond movement. Patients commonly experience[]:
Fatigue
Anxiety
Depression
Apathy
Sleep disturbances
Autonomic dysfunction
Cognitive impairment later in the disease course
These symptoms often produce as much disability as tremor or rigidity, yet patients may hesitate to mention them unless asked directly. Routine screening for mood disorders, sleep problems, constipation, and autonomic symptoms can substantially improve overall management.
A separate reminder about skin cancer
Simon also revealed that she underwent surgery for basal cell carcinoma on her face. Basal cell carcinoma remains the most common skin cancer and generally carries an excellent prognosis when detected early.[]
Related: Was Richard Simmons’ death due to a typically non-lethal cancer?However, having facial lesions may affect patients’ willingness to appear in public or even to seek social interaction. “The cancer was removed, but the surgery affected my appearance and made me more self-conscious about being seen in public,” Simon wrote.[]
Psychological effects of treatment can persist long after the cancer itself has been successfully removed.
What physicians can take away
Celebrity health stories rarely change clinical practice on their own, but Simon’s experience reinforces several enduring lessons.
First, avoid anchoring bias. Persistent or progressive symptoms deserve reconsideration, even when an existing diagnosis appears to explain them.
Second, remember that Parkinson’s disease frequently begins with subtle gait changes or nonmotor symptoms rather than an obvious tremor.
Finally, ask patients how illness is affecting their daily lives, not just physically but also emotionally. Simon said she stepped away from the spotlight because of her health conditions. It's a good reminder for how chronic disease can reshape identity as much as function.