Symptoms of a high level of blood sugar: excessive thirst, frequent urination, fatigue, blurred vision and much more. Learn to recognize and control them.

Symptoms of hyperglycemia: excessive thirst, frequent urination, fatigue, blurred vision and much more. Learn to recognize and control them.

Hyperglycemia occurs when there is excess glucose (sugar) in the bloodstream. This may be a consequence of various factors, such as diabetes, certain medications or stress. Recognizing symptoms of hyperglycemia is crucial to effectively identify and control this condition.

  • Frequent urination: the increase in thirst and the frequent need to urinate are common indicators of a high level of blood sugar. High blood glucose levels force kidneys to work more to filter and eliminate excess sugar.

  • Increased hunger: When blood sugar levels are high, it is possible that the body’s cells do not receive adequate energy. This can trigger intense hunger and cravings, even after meals.

  • Inexplicable weight loss: In some cases, a high level of blood sugar can cause involuntary weight loss. When the organism cannot use glucose as a source of energy, it begins to break down fat and muscle tissue, which causes weight loss despite regular food intake.

In addition, other symptoms of hyperglycemia can be blurred vision, fatigue, irritability and slow healing of wounds. It is important to keep in mind that symptoms may vary depending on the general state of health and the underlying causes.

  1. Blurred vision: high blood sugar levels can affect the shape of the lens, causing blurred vision. This symptom can improve once blood sugar levels are regulated.

  2. Tiredness: Feeling tired and lacking energy can be a consequence of hyperglycemia. High glucose levels hinder the body’s ability to effectively convert sugar into usable energy.

  3. Irritability: uncontrolled fluctuations of blood sugar can contribute to changes in mood. Irritability, restlessness and difficulty concentrating can be observed in people with high blood sugar levels.

  4. Slow healing of wounds: a high level of blood sugar can affect the natural process of healing of the body, prolonging the time it takes to heal the wounds. This can be problematic in the case of minor cuts, scratches or even more important injuries.

Hyperglycemia symptoms Causes
Frequent urination Excess blood glucose
Increase in appetite Insufficient energy that reaches cells
Inexplicable weight loss Inability to use glucose as an energy source
Blurry vision Effects on the shape of the lens of the eye
Fatigue Ineffective sugar conversion
Irritability Blood sugar fluctuations
Slow wound healing Deterioration of the natural healing process

Frequent Urination in the Context of High Blood Sugar Symptoms

Excessive urination associated with high blood sugar levels can be annoying and disturbed everyday life. People can be in need of urinating more frequently, even during the night, which can alter sleep patterns and cause discomfort. Polyuria can also cause an increase in thirst, since the body tries to replace lost liquids.

  • Frequent urination is a common symptom of high blood sugar levels.
  • It occurs due to the greater workload of the kidneys to filter excess glucose.
  • Polyuria can alter sleep patterns and cause an increase in thirst.


Common symptoms of high blood sugar levels Cause
Frequent urination Increase in the workload of the kidneys to filter the excess glucose
Increased thirst Fluid replacement due to excessive urination

Symptoms of High Blood Sugar: Increased Thirst

When blood sugar levels are high, kidneys work more to filter and absorb excess glucose of the blood torrent. As a consequence, more water from the organism is extracted, which causes dehydration. This dehydration triggers the feeling of thirst, since the body tries to replace the loss of liquids.

The following are key points about increased thirst in relation to high blood sugar:

  1. Polydipsia: the increase in thirst, or polydipsia, is a common symptom of high blood sugar levels.
  2. Liquid intake: people with augmented thirst can consume greater amounts of liquids than usual in an attempt to quench their thirst.
  3. Dehydration: high blood sugar levels can cause dehydration, since the body loses more water through excessive urination.
  4. Mint: frequent urination usually associated with an increase in thirst, since the body tries to eliminate excess blood glucose.

Importance of Addressing Increased Thirst:

It is important to recognize and treat the increase in thirst as a high level of blood sugar. If not, persistently high blood sugar levels can cause serious complications, such as diabetic ketoacidosis or lon g-term complications such as cardiovascular diseases and nerve injuries.

When an increase in thirst is experienced, it is essential to control blood sugar levels and consult a healthcare professional to obtain adequate diagnosis and treatment. Lifestyle modifications, such as a balanced diet, regular exercise and medication, can be recommended to help control blood sugar levels and relieve symptoms.

Fatigue and Weakness

People who experience fatigue and weakness due to hyperglycemia may feel constantly tired, even after getting enough rest. They may also have difficulty concentrating and suffer from brain fog. This can affect productivity at work or school and increase the risk of accidents and injuries.

Important information: When blood sugar levels are consistently high, long-term complications such as nerve damage and heart disease can occur. Therefore, it is crucial to monitor blood sugar levels regularly and take appropriate measures to manage and control them.

  • Some strategies to relieve fatigue and weakness caused by high blood sugar levels are:
    1. Maintain a balanced diet low in refined sugars and carbohydrates
    2. Engage in regular physical activity to improve insulin sensitivity
    3. Take prescribed medications or insulin as directed by a healthcare professional
    4. Control stress levels through relaxation techniques such as deep breathing or meditation.
Signs and symptoms of fatigue and weakness related to high blood sugar:
1. Constant fatigue
2. Difficulty concentrating
3. Reduced physical resistance
4. Brain fog or confusion
5. 5. Increased irritability

Blurred Vision: A Common Symptom of High Blood Sugar

When blood sugar levels are constantly high, as occurs in uncontrolled diabetes, various complications can occur throughout the body. One of them is injury to the blood vessels of the retina, the light-sensitive tissue located at the back of the eye. This condition is known as diabetic retinopathy and can cause blurred vision due to fluid leaking into the retina or the growth of abnormal blood vessels.

Note: Blurred vision can also be a symptom of other conditions not related to hyperglycemia, such as eye strain, nearsightedness, or certain eye diseases. It is important to consult a healthcare professional for an accurate diagnosis and appropriate treatment.

Blurred vision caused by high blood sugar levels should not be ignored as it may be an early indicator of diabetes or poor blood glucose control. People who are diabetic or at risk for diabetes should regularly monitor their blood sugar levels and see a doctor if they experience persistent or worsening blurred vision.

  • Blurred vision can be temporary or persistent, depending on the underlying cause.
  • People with high blood sugar levels may also experience other vision problems, such as seeing floaters or having difficulty focusing.
Possible causes of blurred vision in case of hyperglycemia:
Diabetic retinopathy
Liquid leaks in the retina
Growth of abnormal blood vessels in the retina

If you experience blurred vision, it is essential that you effectively control your blood sugar levels, follow a healthy lifestyle and periodically submit to eye exams to detect and prevent any possible complication.

Slow Healing of Wounds

Factors that contribute to the slow scar of wounds:

  1. Deterioration of circulation: high blood sugar levels can damage blood vessels and cause poor circulation. This hinders the arrival of oxygen and nutrients to the place of the wound, which slows the healing process.
  2. Reduced immune function: Chronic elevation of blood sugar levels can weaken the immune system. This weakens the body’s ability to fight infections, making wound healing a more difficult process.
  3. Neuropathy: Diabetic neuropathy, a condition in which nerves are damaged due to high blood sugar levels, can cause loss of sensitivity in the affected area. A person may not realize that he has a wound, which delays treatment and slows healing.

Slow healing of wounds is usually a consequence of high levels of no n-controlled blood sugar. It is crucial that people with diabetes maintain strict control of their glycemia to avoid complications in wound healing. Regular monitoring, a healthy diet, adequate medication and timely care of wounds is essential.

In some cases, health professionals may recommend specific interventions for wound care, such as debridement, the application of topical medications or specialized dressings. A narrow monitoring and collaboration with health professionals are fundamental to treat slow healing wounds in people with high blood sugar levels.

Increased appetite


  1. Constant hunger despite consuming adequate foods of food.
  2. Fast weight of weight or difficulty thinning.
  3. Ring of sugary and calories rich.
  4. Chop frequently throughout the day.
  5. Difficulty controlling the size of the rations during meals.
  6. In some cases, need to eat at night at night.

Polyphia can be an important concern, since it can contribute to weight gain and obesity, which in turn can worsen the symptoms and complications of hyperglycemia. It is essential to monitor the frequency and intensity of the episodes of increased appetite, as well as any other associated symptoms, to determine its underlying cause and seek adequate medical evaluation and treatment.

Author of the article
Dr.Greenblatt M.
Dr.Greenblatt M.
Medical oncologist at the Robert Larner College of Medicine, MD, at the University of Vermont

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