Multi-generation medical history

Scenario

A clinical social worker or genetic counselor captures three generations of family medical history at intake. The conditions() annotation lets each person carry multiple diagnoses simultaneously — and the fill geometry (full, half, quadrant) encodes severity or inheritance proportion at a glance, without cluttering the diagram with text labels.

Annotation key

• conditions: X(fill, color) — paints a shape inside the genogram symbol using the named fill zone and hex color
• full — entire symbol filled; indicates fully affected
• half-left / half-right — left or right half filled; often used for one of two conditions side-by-side
• quad-tl / quad-tr — top-left or top-right quadrant; allows up to four distinct conditions per person
• + diabetes(...) — chain multiple conditions on the same person with +
• deceased — draws a diagonal slash through the symbol
• index — marks the proband with an arrow

How to read

The grandfather's full red fill (heart disease) and half-orange fill (diabetes) are visually inherited by the father, who carries both — encoded as top-left and top-right quadrant fills. The patient (index) shows only hypertension in the left half, indicating partial inheritance. Tracing any color across generations immediately reveals the inheritance chain.