Unlike high blood pressure (hypertension), low blood pressure (hypotension) carries much lower risks, however, it can still be dangerous in certain circumstances. When your blood pressure is low it means that your blood is not being pumped around your body with the force required to deliver enough oxygen to all of the relevant organics and cells.
One of the most common symptoms is that when a person stands up they can get dizzy. People who stand for long periods of time and then faint usually do so due to a blood pressure drop. Other symptoms of hypotension are : feeling dizzy, faint, lightheaded, lightheadedness, unsteadiness, lack of concentration, nausea (feeling sick), weakness, blurred vision, palpitations (a rapid, and/or irregular heartbeat), pale, confusion, clammy, fatigue, cold skin, depression or anxiety, thirst, sleepiness, confusion, black, tarry stools, tiredness, general weakness.
There are a few tips mentioned in this article on how to increase blood pressure.
Most doctors will not treat low blood pressure unless it is causing problems such as causing a person to fall over with no obvious reason. There is a medication (Orvaten, Proamatine, Midodrine, Fludrocortisone, Angiotensin-converting enzyme (ACE inhibitors), Angiotensin receptor blockers, Calcium-channel blockers, Diuretics (water tablets), Beta-blockers) that people can be prescribed in order to raise blood pressure, but it is rarely used as doctors tend to give the following advice on how to increase blood pressure:
If you follow some of these tips on how to increase blood pressure, you may not even need to see a doctor, as controlling it yourself is relatively easy. You can buy blood pressure monitor online (choose brands like Omron, CVS, Homedics, Advocate, Ozeri, LifeSource, Adscope, SantaMedical, Panasonic) for around $25 these days.