Question: How many people are affected by keratoderma with woolly hair ?
Answer: Keratoderma with woolly hair is rare; its prevalence worldwide is unknown. Type I (Naxos disease) was first described in families from the Greek island of Naxos. Since then, affected families have been found in other Greek islands, Turkey, and the Middle East. This form of the condition may affect up to 1 in 1,000 people from the Greek islands. Type II (Carvajal syndrome), type III, and type IV have each been identified in only a small number of families worldwide.
Source: GHR