(Health.com) -- When Megan Kenny was five years old, she began to exhibit a strange and troubling symptom: Every time she stood up for more than two minutes, she collapsed. The episodes were particularly bad after Megan had been sitting or lying down for prolonged stretches, such as when she woke up in the morning or walked between classes at school. "Church was always a disaster," recalls Mary Kenny, Megan's mother. After sitting or kneeling for a time, Megan would stand up with the congregation and invariably fall down. As Megan got older, other worrisome signs emerged. Her eyelids began to droop. She continued to wet the bed and suffered from constant bladder infections. And, about once a week, she experienced extreme hypoglycemic episodes -- a sudden drop in blood sugar levels -- that left her shaking and unable to function for the rest of the day.
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Megan Kenny and her brother would collapse after standing for two minutes
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The siblings were diagnosed with dopamine beta hydroxylase deficiency (DBHD)
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After receiving proper treatment, Megan ran marathons, completed triathlons
In 1986, he was the first person to identify the disorder, in a 33-year-old woman who hadn't opened her eyes for the first five days of her life -- a common feature of @placeholder.