What Is Hypertension Causes Symptoms Types and Treatment
Alternatively known as high blood pressure (HBP), hypertension (HT or HTN) is a medical situation wherein blood pressure in the arteries of an individual is significantly increased. It is one of the most common medical conditions seen in patients worldwide. With about 1 million people already suffering from the disease, the numbers can significantly rise to 1.57 billion by 2025, as suggested by WHO (World Health Organisation).
It is a situation wherein the blood pressure in an individual's body is abnormally high. Such a person might have high psychological stress. If this situation is persistent, it may lead to several other severe health conditions such as heart disease, stroke, etc.
Before delving into this topic, you must first understand a few simple but essential terms so that your understanding of the subject becomes easy.
Arteries – These are the blood vessels that are responsible for blood flow to different parts of our body.
Blood Pressure – This is the pressure caused against arteries while blood flows inside a body. Blood pressure is expressed as a two-digit figure. When the heart contracts or beats, the first number (systolic) shows the pressure in blood vessels.
Types of Hypertension
These are broadly categorized into sections
Primary or Essential Hypertension – This class of hypertension is mostly seen in adults and has no proven or identifiable cause for occurrence. One may develop this symptom over time with age.
Secondary Hypertension – In this case, the blood pressure is comparatively higher than primary or essential hypertension. However, this kind is caused due to a medical condition or medications. The causes of hypertension could be kidney issues, thyroid issues, adrenal gland tumors, medications like cold remedies, birth control pills, painkiller overdose, etc.
What is Hypertension Symptoms?
There may be instances when a person does not show any symptoms at all and yet have an increased level of blood pressure. However, few patients show headaches, nosebleeds, and shortness of breath as its symptoms. Notably, these symptoms are not always seen in such patients and might occur only when the condition is life-threatening or extreme.
Reasons for Hypertension
Environmental conditions and stress can be causes of hypertension which lead to a healthy person showing such symptoms. However, this can also be caused as a result of an unhealthy lifestyle, consumption of fatty items, use of alcohol, tobacco, etc.
Hypertension Diagnosis
It is easy to diagnose the blood pressure of an individual using a medical instrument named a sphygmomanometer. Usually, three various readings are taken to understand and identify the extent and causes of hypertension. In this regard, medical professionals also use blood tests, urine tests, ECG or electrocardiogram tests, kidney ultrasound imaging, etc.
Treatment of Hypertension
Now that you know what is meant by hypertension, you must also note the precautionary measures which need to be taken by an individual.
Since hypertension is often connected with obesity, it is essential to adhere to weight loss programs and exercise.
You should avoid consuming food items rich in low-density lipoprotein or LDL cholesterol.
Your diet must have an increased level of Vitamin D and calcium.
A balanced meal containing vegetables, fruits, low-fat dairy products, and whole grains are recommended.
While this helps you understand what is the meaning of hypertension and the related concepts effortlessly, you can also refer to our questionnaires for a glimpse of related exercises. You can also download our Vedantu app for better access to these notes, questionnaires and even online sessions for enhanced clarity on these topics.
FAQs on Hypertension High Blood Pressure Explained
1. What is hypertension?
Hypertension is a chronic medical condition in which the blood pressure in the arteries remains persistently elevated above normal levels. It is commonly defined as a systolic pressure ≥140 mmHg and/or a diastolic pressure ≥90 mmHg in adults. High blood pressure increases the workload on the heart and damages blood vessels over time, raising the risk of heart disease, stroke, and kidney failure.
2. What causes hypertension?
Hypertension is caused by a combination of genetic, physiological, and lifestyle factors that increase resistance in the arteries or cardiac output. Common causes include:
- Primary (essential) hypertension – no single identifiable cause; linked to genetics, age, obesity, and high salt intake.
- Secondary hypertension – due to underlying conditions such as kidney disease, endocrine disorders, or certain medications.
- Lifestyle factors like sedentary behavior, smoking, stress, and excessive alcohol intake.
3. What is the difference between systolic and diastolic blood pressure?
Systolic blood pressure is the pressure in the arteries during heart contraction, while diastolic blood pressure is the pressure during heart relaxation. Specifically:
- Systolic pressure – measured when the left ventricle contracts and pumps blood into the aorta.
- Diastolic pressure – measured when the heart relaxes between beats and fills with blood.
4. How does hypertension affect the body?
Hypertension damages blood vessels and vital organs by exerting excessive force on arterial walls over time. Major effects include:
- Thickening and narrowing of arteries (atherosclerosis).
- Increased risk of heart attack and heart failure.
- Higher chance of stroke due to vessel rupture or blockage.
- Damage to kidneys and reduced filtration ability.
- Vision problems due to retinal vessel damage.
5. What are the symptoms of hypertension?
Hypertension is often called the "silent killer" because it usually has no noticeable symptoms. Most people with high blood pressure feel normal until complications develop. In severe cases, symptoms may include:
- Headaches
- Dizziness
- Blurred vision
- Chest pain
6. What is primary vs secondary hypertension?
Primary hypertension has no identifiable single cause, while secondary hypertension results from an underlying medical condition. Key differences include:
- Primary (essential) hypertension – develops gradually over years; influenced by genetics and lifestyle.
- Secondary hypertension – caused by kidney disease, hormonal disorders (e.g., excess aldosterone), or medications; may appear suddenly.
7. How is blood pressure regulated in the body?
Blood pressure is regulated by the heart, blood vessels, kidneys, and hormonal systems that control fluid balance and vascular tone. Important mechanisms include:
- Cardiac output – the volume of blood pumped by the heart per minute.
- Peripheral resistance – resistance offered by small arteries and arterioles.
- Renin–angiotensin–aldosterone system (RAAS) – regulates blood volume and vessel constriction.
- Autonomic nervous system – adjusts heart rate and vessel diameter.
8. Why is hypertension called the silent killer?
Hypertension is called the silent killer because it causes progressive organ damage without obvious symptoms. Many individuals are unaware they have elevated blood pressure until serious complications such as heart attack, stroke, or kidney failure occur. Routine screening is crucial for prevention.
9. What are the risk factors for hypertension?
Risk factors for hypertension are conditions or behaviors that increase the likelihood of developing high blood pressure. Major risk factors include:
- Family history and genetic predisposition
- High sodium (salt) diet
- Obesity and physical inactivity
- Chronic stress
- Smoking and excessive alcohol consumption
- Advancing age
10. How can hypertension be prevented or managed?
Hypertension can be prevented or managed through lifestyle modifications and, when necessary, medication. Effective strategies include:
- Reducing salt intake and following a balanced diet (e.g., DASH diet).
- Regular physical activity.
- Maintaining a healthy body weight.
- Managing stress and improving sleep.
- Using prescribed antihypertensive drugs such as ACE inhibitors, beta-blockers, or diuretics.
