Galen of Pergamon
the man who invented the chart.

Galen was born in 129 AD in the Greek city of Pergamon, on the Aegean coast of what is now Turkey. His father was an architect; his early schooling was in philosophy and mathematics. He turned to medicine after a dream — his father's, not his — and trained for a decade across the medical centres of the eastern Mediterranean: Smyrna, Corinth, Alexandria.

He came home at twenty-eight to take the post of physician to the gladiator school of Pergamon. It was bloody, hands-on work. The wounds the gladiators brought him — abdominal ruptures, sword cuts, severed tendons — were unprecedented teachers; Galen called them windows into the body. He came out of those four years with anatomical knowledge no contemporary could match.

By 162 AD Galen had moved to Rome, and reputation followed him quickly. Within a decade he was physician to the emperor Marcus Aurelius, then to his son Commodus, and later to Septimius Severus — three reigns, four decades close to the political centre of the Roman world.

What that position gave him was, of all things, time and parchment. He wrote almost without stopping for forty years — on anatomy, physiology, pharmacology, hygiene, logic, the diagnosis of fevers. And, most consequentially for medicine though he would not have called it his greatest work, he kept case notes.

Roughly half of what Galen wrote survives — and that half still runs to some ten thousand printed pages in modern editions, the largest body of writing by any author from classical antiquity. Inside those volumes, alongside the philosophy and the anatomy, are the cases. Hundreds of them. A wealthy Roman woman with insomnia. A philosopher with a tremor. A slave with a fever that came and went.

For each, Galen wrote down the symptoms, the timeline, what he tried, and what happened. Read in translation, the format is uncanny — it reads like a modern progress note, only in Greek. Galen didn't invent medicine. What he invented, or at least made durable, was the practice of writing the patient down.

Every chart written since descends from this discipline. Medieval physicians read Galen and copied the format into their own casebooks — Avicenna and Razi among them, both of whom lend their names to our other apps for the same reason. Renaissance Europe rediscovered him through their Arabic translations; the first modern hospital case logs borrowed his structure; so did the first electronic health records of the 1970s, and everything built since.

The chart, in other words, is one of medicine's oldest technologies. It has changed substrate — vellum, paper, screen — but the underlying discipline is the one Galen put in place: symptoms, timeline, treatment, outcome. Written, kept, and read again.

For seventeen centuries the chart belonged to the physician. The physician wrote it, kept it, read it. The patient was the subject of the chart, not the owner of it.

We took Galen's name for this app because the next chapter of that work changes one thing about the arrangement. The chart still gets written, just as carefully. But it belongs to the patient now: they hand the key to a caregiver who needs it, and take it back when the relationship ends. Galen never thought of the chart as the physician's property — only as the place where the patient's story belonged. The story was always theirs. We're just giving them the pen.