Most cases of postural orthostatic tachycardia syndrome (POTS) are not thought to be inherited. Although the condition generally occurs sporadically, some people with POTS do report a family history of orthostatic intolerance (an excessively reduced volume of blood returns to the heart when moving from a lying down to a standing position). This suggests that inherited factors may play a role in the development of POTS in some families. 
Is Postural orthostatic tachycardia syndrome inherited ?