Last week a patient came in after his third ER visit in four months. Dizziness, near-syncope, and two falls. He has Parkinson’s disease and has been on carbidopa-levodopa for six years. His blood pressure in my office was 128/82 sitting. Completely normal.

That number told me almost nothing.

What I needed was his blood pressure lying down and again after standing for three minutes. I needed the reading he took at home at 7 a.m. before his first medication dose. I needed every symptomatic episode logged with the corresponding positional reading so I could identify the pattern.

Most patients with neurogenic orthostatic hypotension are never taught how to perform orthostatic measurements correctly. Those who are rarely do the calculations. What actually happens in clinic is this: Patients arrive with pages of handwritten numbers, no calculations, and no clear trend. I sit with a calculator manually determining whether a diagnostic blood pressure drop occurred.

Neurogenic orthostatic hypotension is one of the most underrecognized and underdocumented problems in outpatient neurology. It affects roughly 20 percent of patients with Parkinson’s disease and an even higher percentage of patients with multiple system atrophy, Lewy body dementia, and pure autonomic failure. Diabetic autonomic neuropathy causes it too, but this often gets missed when providers focus only on elevated sitting blood pressures and never ask what happens when the patient stands.

A drop of 20 mmHg systolic or 10 mmHg diastolic after standing is diagnostic. Most patients have no idea what their blood pressure does when they stand up.

Primary care physicians, cardiologists, and emergency physicians are trained to treat hypertension. They are not movement disorder neurologists. A patient with unrecognized neurogenic orthostatic hypotension who presents with elevated supine or sitting blood pressure may leave the ER or clinic with an additional antihypertensive medication. That medication worsens the positional drop. Without positional trending data, the treating provider has no way to see the full clinical picture.

The result is predictable. Patients pass out, fall, get admitted, and accumulate medical costs from complications that were potentially preventable.

The medication history problem is equally frustrating. Determining what a patient tried years ago and why it was stopped often requires searching through outside records or old chart notes. In reality, most physicians do not have time to do that. Medications get prescribed again even though they previously caused side effects or failed entirely.

Most EMRs were not designed for this problem. They separate allergies from current medications and past medications, but usually do not provide a structured way to track failed medications or side effects independently. Patients confuse the two constantly. Side effects are listed as allergies. Failed therapies disappear entirely.

Hypertension creates a similar problem. Physicians know uncontrolled hypertension causes strokes, heart attacks, kidney disease, vascular dementia, and blindness, yet many patients still arrive at appointments with little or no home data. A single office reading is only a spot check. Blood pressure changes throughout the day. Trends over time matter far more than isolated numbers.

Diabetes care evolved around this reality years ago. We trained patients to check glucose regularly because management depends on data. Hypertension should be treated the same way. If a patient arrives without meaningful home readings, clinical decisions are often based on incomplete information.

I initially built BPMedTracker to help prevent stroke. Uncontrolled hypertension and diabetes cause complications silently between appointments when no one is adjusting medications because no trend data exists. Patients often leave appointments without enough information for meaningful treatment changes to happen.

The app tracks blood pressure with positional readings, organizes medications into five categories (current medications, past medications, failed medications, side effects, and allergies), and includes an extensive education section covering the same concepts I teach patients in clinic every day. It generates physician-ready reports patients can bring to any appointment while keeping all data stored locally on the device with no login and no data sharing.

I could not find an app that combined education, orthostatic blood pressure tracking, medication failure tracking, and physician-ready reporting in one place. So I built it.

The patients who need this most are often managing hypertension, diabetes, and neurogenic orthostatic hypotension simultaneously while seeing multiple specialists who do not share records. They are also the patients most likely to suffer complications when providers make decisions without the full clinical picture.

Helping patients organize and carry their own data is not simply a technology problem. It is a care coordination problem that technology can help solve.

Jerome Lisk is a neurologist.