Amyotrophic lateral sclerosis (ALS)

What’s Your Rare iQ?

When are the symptoms of Stargardt disease most commonly seen?

Neuromyelitis optica spectrum disorders (NMOSD)

60% of tuberous sclerosis cases are diagnosed in the first year. Diagnosis slows down considerably after the first year.

Measured by: prevalence

Disease	Est US prevalence	Inheritance	Age of onset
Narcolepsy	146,000 – 200,000
Idiopathic hypersomnia	104,280 – 130,000
Charcot-Marie-Tooth disease	82,250 – 125,000
Myasthenia-Gravis	48,000 – 60,000
Young onset parkinson’s disease	40,000 – 50,000
Lennox-Gastaut syndrome	30,000 – 45,000
Tuberous sclerosis	27,000 – 37,500
Huntington disease	21,450 – 30,000
Progressive supranuclear palsy	21,000 – 45,870
Amyotrophic lateral sclerosis	15,000 – 17,500