rare diseases

Seldom-seen ailments

Rare diseases are medical conditions affecting a small percentage of the population—in the US, fewer than 200,000 people; in Europe, fewer than 1 in 2,000.

Despite individual rarity, thousands of rare diseases exist collectively, affecting millions worldwide.

Many are genetic, chronic, and difficult to diagnose.

The orphan drug program incentivizes treatments for rare diseases.

Opposites
prevalence/frequency

rare diseasesendemic diseases

Illnesses constantly present locally

medical familiarity/recognition

rare diseasesdiabetes

Metabolic disorder affecting glucose

heart disease · cancer · hypertension

individual vs. population health burden

rare diseaseslifestyle diseases

Conditions caused by behavior

Family

rare, diseases

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Negative · Everyday, not technical · Rated G