What are the signs of an HYPP attack?
• As with any genetic disease, HYPP has different degrees of what is termed penetrance in different horses. Penetrance is a term that is used to describe the extent to which a genetic trait can be seen in a particular individual. Some horses will be severely affected (and this will be exacerbated if they are homozygous for the trait), and others may look normal for the majority of their lives.
