Davenport-Donlan syndrome
An n-of-1 disease characterized by hearing loss, almost white hair, a psoriasiform rash with hyperkaratotic papillomata, muscle contractures, and depressed granulocyte and monocyte chemotaxis, dominant hearing loss, white hair, contractures, hyperkeratotic papillomata, and muscle contractures, and depressed granulocyte and monocyte chemotaxis. This is an n-of-1 use case where only one patient or family has been described with this disorder.