Is 120 over 42 low for blood pressure older woman?

120/42 mmHg is considered low blood pressure for an older woman. Normal blood pressure for adults is generally considered to be between 120/80 mmHg and 140/90 mmHg. Blood pressure readings below 90/60 mmHg are considered to be low. Low blood pressure can cause symptoms such as dizziness, lightheadedness, fatigue, and fainting. It can also lead to more serious problems such as stroke and heart attack. If you are an older woman and your blood pressure is consistently low, it is important to see a doctor to rule out any underlying medical conditions.