Final answer:
The chronic hereditary disorder indicated by constant or frequent facial blushing is not specified among the conditions listed. While several genetic disorders affect the skin and blood vessels, a medical professional should be consulted for an accurate diagnosis.
Step-by-step explanation:
The chronic hereditary disorder indicated by constant or frequent facial blushing is not directly listed among the provided conditions. However, facial blushing could potentially be associated with several hereditary conditions that influence skin and vascular systems.
Nonetheless, it's important to note that the provided references, such as hereditary breast ovarian cancer syndrome, Brugada syndrome, and others like Huntington's disease or Pseudoxanthoma elasticum, are specific genetic disorders with distinct symptoms and may not be directly related to hereditary facial blushing.
When considering genetic disorders leading to facial manifestations, Fifth disease, characterized by parvovirus B19 infection and leading to a 'slapped cheek' rash, could be mistaken for chronic blushing but is not hereditary.
Conditions such as hereditary angioedema can cause swelling in facial areas, but again, this is not the same as chronic blushing.
It is important to consult with a medical professional to determine the specific cause of consistent facial blushing and to receive a correct diagnosis for any underlying hereditary disorder.