The role of heredity in the severity & type of symptoms

[Guest guest]

I've noticed that many times when people describe their own

experience with rosecea, they also mention one or more relative whose

symptoms or progression were similar if not identical to their own.

Before I get my hopes up too much, can anyone tell me if it's logical

to assume that more often than not, this is precisely happens? I

mean, for those of us who KNOW that a relative of ours had or has

rosecea.

How predictive might family history be in the COURSE and/or SEVERITY

of an individual's condition?

THANKS!