Pale implies a faintness or absence of color, which may be natural when applied to things, the pale blue of a violet, but when used to refer to the human face usually means an unnatural and often temporary absence of color, as arising from sickness or sudden emotion: pale cheeks.
This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the condition.
autosomal-dominant inheritance, a pattern of inheritance in which the transmission of a dominant allele on an autosome causes a trait to be expressed. Males and females are usually affected with equal frequency. pattern of inheritance in which the transmission of a dominant allele on an autosome causes a trait to be expressed. Males and females are usually affected with equal frequency.