For three years, I had a relentless cough that would not stop.

Not “seasonal allergies.”

Not “a little throat clearing.”

A constant, exhausting, life-consuming cough.

I went through the entire checklist:

- nebulizers

- cough suppressants

- reflux treatment

- ENT evaluations

- vocal cord dysfunction diagnosis

- imaging

- medication changes

At one point, an ENT even surgically clipped my uvula because everybody thought the problem had to be structural, respiratory, reflux-related, or airway-related.

Nothing worked.

Not temporarily.

Not partially.

Not at all.

Meanwhile, I have Parkinson’s disease and Deep Brain Stimulation.

So eventually I started digging into the literature myself and came across published reports discussing unintended vagus nerve stimulation and cough associated with DBS hardware or stimulation spread. One Parkinson’s case report described coughing that intensified with DBS activation and stopped immediately when stimulation was turned off (Kondziolka et al., Stereotactic and Functional Neurosurgery, 2019, PMID: 31600763).

That got my attention.

Because the vagus nerve is deeply involved in cough reflex, laryngeal sensation, swallowing, vocal cord function, and autonomic signaling. Parkinson’s patients already know the nervous system can create symptoms that look unrelated until you connect the circuitry.

So I asked my Movement Disorder Specialist to adjust my DBS settings.

Problem solved.

Immediately.

Three years of coughing.

Three years of failed treatments.

Three years of specialists chasing the wrong system.

And the solution was neurological.

Now to be clear, I am NOT saying every chronic cough in Parkinson’s is DBS-related. Most are not. There are many legitimate causes of chronic cough including reflux, aspiration, asthma, allergies, infection, and swallowing dysfunction.

But I am saying this:

If a Parkinson’s patient with DBS has a persistent, treatment-resistant cough, especially one associated with throat tightness, vocal changes, choking sensation, or timing changes after DBS programming, then DBS-related vagal or laryngeal pathway involvement deserves consideration instead of automatic dismissal.

Because sometimes the body is not “sick.”

Sometimes the circuitry is misfiring.