Low Blood Pressure Symptoms | Hypotension Explained
Low blood pressure (hypotension) causes symptoms like dizziness, fatigue, and fainting. Learn which signs to watch for and when to seek medical advice.
Things worth knowing about "Low blood pressure symptoms"
Low blood pressure (hypotension) causes symptoms like dizziness, fatigue, and fainting. Learn which signs to watch for and when to seek medical advice.
What is low blood pressure?
Low blood pressure, medically known as hypotension, is generally defined as a systolic blood pressure (the upper value) below 90 mmHg, although many experts use 100 mmHg in women and 110 mmHg in men as the threshold for clinical relevance. Low blood pressure is common, especially in young, slender women, and is often harmless. However, in more severe cases it can significantly affect quality of life.
Symptoms of low blood pressure
Symptoms occur because the brain and other organs do not receive enough blood and oxygen. The most common symptoms include:
- Dizziness, especially when standing up quickly (orthostatic hypotension)
- Fatigue and general weakness
- Blurred or darkening vision
- Headaches, particularly in the morning
- Difficulty concentrating and mental fogginess
- Rapid heartbeat or palpitations
- Fainting (syncope) in severe cases
- Cold hands and feet due to poor circulation
- Pale skin
- Nausea and loss of appetite
Causes of low blood pressure
Low blood pressure can have various underlying causes:
Primary (idiopathic) hypotension
This form occurs without any identifiable underlying disease. It is often constitutional, meaning it is related to a person's natural physical makeup, and commonly affects young, slender women.
Secondary hypotension
Here, a specific medical condition or trigger is responsible, such as:
- Heart conditions (e.g., heart failure, arrhythmias)
- Dehydration or fluid loss
- Hormonal disorders (e.g., adrenal insufficiency, hypothyroidism)
- Medications (e.g., antihypertensives, diuretics, antidepressants)
- Blood loss or severe infections
- Pregnancy
Orthostatic hypotension
This specific form occurs when blood pressure drops rapidly upon standing from a sitting or lying position. It is more common in older adults and significantly increases the risk of falls and dizziness.
Diagnosis
Diagnosis is made through repeated blood pressure measurements at rest and while standing. Additional diagnostic steps may include:
- 24-hour ambulatory blood pressure monitoring
- Blood tests (e.g., thyroid function, complete blood count, electrolytes)
- ECG to assess heart function
- Schellong test (blood pressure measured lying down and then standing)
Treatment and tips for low blood pressure
For mild hypotension without an underlying condition, simple lifestyle measures are often sufficient:
- Stay hydrated: Drinking at least 2 liters of fluid per day helps stabilize blood pressure.
- Salt intake: A slightly higher salt intake can be beneficial, unless contraindicated.
- Rise slowly: Avoid sudden changes in position to reduce dizziness.
- Compression stockings: Help improve venous return, especially in orthostatic hypotension.
- Regular physical activity: Exercise strengthens the cardiovascular system.
- Contrast showers: Alternating warm and cold water stimulates circulation.
- Caffeinated drinks (e.g., coffee, tea) may provide short-term relief.
When hypotension is caused by an underlying condition, treating that condition is the key priority. In more severe cases, a doctor may prescribe blood pressure-raising medications such as etilefrine or midodrine.
When to see a doctor
Medical evaluation is recommended in the following situations:
- Frequent episodes of fainting or falls
- Rapid heartbeat or chest pain
- Sudden, severe dizziness without explanation
- Low blood pressure combined with fever, vomiting, or diarrhea
- Persistent symptoms despite lifestyle adjustments
References
- Freeman R et al. - Consensus statement on the definition of orthostatic hypotension, neurally mediated syncope and the postural tachycardia syndrome. Clinical Autonomic Research, 21(2):69-72, 2011. PubMed PMID: 21431947.
- Lahrmann H et al. - Orthostatic hypotension. Handbook of Clinical Neurology, 117:469-476, 2013. PubMed PMID: 24095143.
- World Health Organization (WHO) - Cardiovascular diseases: Key facts and prevention. Geneva, 2023. Available at: https://www.who.int/health-topics/cardiovascular-diseases
Most purchased products
For your iron balance
Specially formulated for your iron balance with plant-based curry leaf iron, Lactoferrin CLN®, and natural Vitamin C from rose hips.
For your universal protection
As one of the most valuable proteins in the body, lactoferrin is a natural component of the immune system.
For Healthy Oral Flora & Dental Care
Formulated lozenges with Dentalac®, lactic acid bacteria, and Lactoferrin CLN®The latest entries
3 Posts in this encyclopedia categoryGallbladder inflammation
Intermittent claudication
Most read entries
3 Posts in this encyclopedia categoryMagnesiumcarbonat
Calorie content
Cologne list
Related search terms: Low blood pressure symptoms