The letter from Clinton’s doctor reported her vital medical signs (100/65 blood pressure, heart rate 72, cholesterol of 195, normal lab tests) and briefly reviewed her major medical history. She has hypothyroidism, for which she takes medication, and suffers from seasonal allergies.
Clinton was also found to have blood clots in 1998 and 2009; she takes a blood thinner regularly. She has some family history with stroke and heart disease.
A concussion that Clinton suffered in December 2012 has been the foundation for much of the speculation about her health. The doctor’s letter reported that Clinton had a stomach virus, became dehydrated, fainted, and sustained the concussion. During an evaluation after the concussion, a blood clot was found in her head.
She was hospitalized to treat the clot about two weeks after the concussion, according to contemporary news reports. She was released from the hospital a few days after that and returned to work about a week later. She also suffered from double vision after the concussion and wore special glasses for a time to cope.