Signs and Symptoms of Diabetes of All Types – An Overview

Nearly 400 million people in the world have diabetes.  In addition, it is estimated that 8 million people may be undiagnosed of the disease or are unaware of their health condition [1]. It is therefore essential that we increase awareness regarding diabetes. The first step is to know about the key signs and symptoms of diabetes.

This article will give you the correct information needed for diabetes.

Know About Diabetes

Blood Glucose Action

The primary source of energy for our body is glucose. It comes from the diet we take. Insulin is a hormone present in our body that helps absorb glucose by every body’s cell. Glucose enters the cells with the help of insulin and is further used for energy generation and body metabolism.

Insulin is produced by the pancreas beta cells. But when the pancreas beta cells become weak, or when our body becomes insulin resistant, insulin deficiency occurs. Due to insulin deficiency, the glucose does not reach the cells and stays in our blood. As a result, it causes an increase in blood glucose levels.

When the blood glucose levels, also known as blood sugar levels in the body, are too high, it causes diabetes.

symptoms of high blood sugar

Normal Blood Sugar Levels:

  1. Before eating is 72-99 mg/dl.
  2. After eating is 80-130mg/DL.

Any levels above the given normal blood sugar levels over time are an indication of diabetes.


High blood sugar levels significantly above 140 mg/DL cause diabetes.

Types of Diabetes

The various types of diabetes are as follows:

  1. Type-1 Diabetes: A chronic condition when your pancreas does not produce enough insulin or no insulin. It mainly occurs in adolescents.
  2. Type -2 Diabetes: When your body does not use insulin properly due to body cells being insulin resistant. It is more common at the age of 45and above.
  3. DKA(ketoacidosis diabetes): A severe condition when your body produces excess ketones.
  4. Gestational Diabetes: It is a condition when the blood sugar levels are high during pregnancy.

Symptoms of Diabetes or High Blood Sugar

According to the doctor, there are no apparent signs and symptoms of diabetes mellitus, but if symptoms like feeling thirstier, having weight loss, and desire of frequent urination, these all may indicate diabetes.

Type-1 Diabetes

In type -1 diabetes, our immune system attacks our beta cells of the pancreas. As a result, beta cells produce insulin in the pancreas. However, the immune system attacks beta cells and destroys them. As a result, the beta cells of the body become weak. Consequently, they fail to produce enough insulin.

Due to a deficiency of insulin, blood glucose levels are high.

symptoms of type 1 diabetes

Causes of Type 1 Diabetes

Type-1 diabetes causes are mainly genetic, wherein the immune system attacks insulin-reducing cells. Exposure to viruses, chemical toxins can also cause type 1 diabetes.

Symptoms of Type-1 Diabetes

  • It increases hunger even after eating.
  • Fatigue.
  • More thirst.
  • Mood changes
  • Belly pain
  • Dehydration
  • Weight Loss

symptoms of type 1 diabetes

Why be Aware of Type-1 Diabetes on Time?

Type-1 Diabetes, if left untreated, can cause any of the following complications:

  • Vision loss due to diabetic retinopathy [2]
  • Never damage foot pain and, in worse cases, leg amputation due to diabetic neuropathy.
  • Healing of wounds would become difficult and unbearable due to the slow-healing process.
  • Kidney failure due to diabetic neuropathy [2]
  • Heart diseases and other heart complications
  • Dental problems, as a result, you may have gum bleeding toothaches.
  • Mental health problems, especially depression

Thus, it is essential to diagnose type-1 diabetes and get proper treatment to avoid such complications.


Type-1 blood sugar can lead to serious medical complications. Should not ignore any signs of increased thirst, increased hunger, and fatigue. They may indicate type-1 diabetes.

Type-2 Diabetes

In type-2 diabetes, the body cells become resistant to insulin. As a result, it decreases glucose absorption by the cells. Glucose thus accumulates in the bloodstream. Over time the high blood glucose levels cause’ pressure on increasing insulin production and, therefore, weakness the pancreatic cells. Finally, the body is now insulin resistant. Moreover, due to damage to pancreatic cells, it is insulin deficient.

Causes of Type-2 Diabetes

Poor lifestyle, family history, obesity, age are the leading causes of type 2 diabetes.

Symptoms of Type -2 Diabetes

  • Frequent Infection.
  • Slow-healing sores.
  • Weight Loss.
  • Frequent Urination.
  • Extreme Thirst

symptoms of type 2 blood sugar

Chronic Type 2 Blood Sugar Symptoms are:

  • Skin infection mainly yeast infections
  • Numbness in the feet
  • Dark skin patches under armpit, neck, thighs
  • Foot pain, slow healing wounds, and nerve damage.

Type 2 Blood Sugar Symptoms in Women

  • Painful Urination
  • Irregular Periods
  • Weight Gain
  • Depression

Type 2 Blood Sugar Symptoms in Men

  • Skin Infection
  • Vision Loss
  • Slow Healing Wounds.
  • Erectile Dysfunction.
  • Frequent Urination.

Also Read: Diabetes and Erectile Dysfucntion

Why be Aware of Type-2 Diabetes on time?

Following are the complications of type 2 diabetes:

  • In addition, 32 % of people with type 2 diabetes are prone to cardiovascular risks like heart strokes [2]. As a result, they may have life-threatening heart diseases.
  • 29% of type 2 diabetic patients have Stage 3 and above kidney damage and diabetic ketoacidosis complications [3].
  • Eye damage and loss of vision
  • Hearing impairments
  • Diabetic neuropathy and nerve damage. These can cause foot ulcers, pain and can lead to leg amputations.
  • Memory loss.
  • Mood swings. Due to which they are prone to severe depression.


Type 2 diabetes is mainly due to improper lifestyle, obesity, and family factors. Don’t ignore signs of frequent thirst, frequent urination, numbness, mood swings, and slow healing wounds.

DKA or Diabetic ketoacidosis

Ketoacidosis diabetes occurs when insulin level gets low, and the body starts to burn fat for energy. DKA is a severe complication of type-1 diabetes. But it can occur in patients with type 2 diabetes. Due to the low insulin level, extreme ketones produce and cause the blood to more acidic.

The liver releases ketones after burning body fat for generating energy when insulin is deficient. Therefore, a high level of ketones leads to DKA.

Ketones levels > 1.6 mmol/L for a longer time indicate Diabetic ketoacidosis.

management of early symptoms of diabetic ketoacidosis

Causes of Diabetic ketoacidosis

Hormone disorders, diuretics and corticosteroids, alcohol consumption, pancreatic, diseases like pneumonia, and urine infection all can trigger DKA.

Diabetic Ketoacidosis Symptoms

  • High blood sugar levels (hyperglycemia)
  • High ketone levels in the urine
  • Rapid and fruity-smelling breath
  • Nausea or Vomiting.
  • Muscle Aches.
  • Headaches.
  • Weakness.
  • Belly Pain
  • Shortness of breath
  • Confusion

Key sign: Having ketone levels in the range of 1.0 to 3.0 or > 3.0 for a longer time.

Why should You Worry About DKA?

DKA can be a life-threatening condition. It can cause kidney damage and renal failure. If left untreated for a longer time, diabetic ketoacidosis can lead to coma or death.


High ketones cause diabetic ketoacidosis. It can be life-threatening. Blood tests help in diagnose of DKA.

Gestational Diabetes

Gestational diabetes occurs during pregnancy in some women when their blood sugar levels go high due to pregnancy.

It usually develops in the 24th week of the pregnancy. Thus, doctors recommend blood glucose level tests during 24th to 28th week of pregnancy to rule out or diagnose gestational diabetes.

gestational blood sugar symptoms

Causes of Gestational Diabetes Symptoms

Weight gain during pregnancy, family history of diabetes, and hormonal changes are the leading causes of Gestational diabetes.

Gestational Diabetes Symptoms

  • Weight gain
  • Frequent urination
  • Unusual thirst
  • Sugar in urine
  • Blurred vision
  • Fatigue
  • Skin infection, especially vaginal and bladder infection

Risks Associated With Gestational Diabetes When Left Untreated:

  • Mothers who have gestational diabetes are at higher risk of having C-section delivery.
  • Women with gestational diabetes are more at risk of delivering an obese baby.
  • Gestational diabetes in women can cause future type 2 diabetes in such women. It can thus cause type 2 diabetes complications when left unmanaged.
  • Untreated, gestational diabetes can lead to premature delivery and can cause baby deaths after birth.
  • Gestational diabetes, when left unmanaged, can be the cause of breathing problems in babies.


Gestational Diabetes is due to pregnancy weight gain and requires treatment as it can lead to premature deliveries and type 2 diabetes soon.


Hypoglycemia is a medical condition where the blood glucose level falls below the normal levels. It is also known as low glucose condition. If left untreated it can lead to severe health problems like a coma.

When the blood sugar levels fall below 70mg//dL it is an indication of Hypoglycemia or low sugar levels.

Symptoms of Hypoglycemia are:

  • Hunger,
  • Disorientation,
  • Too much sweating,
  • Anxiety,
  • Feeling sleepy and dull,
  • Sweating,
  • Irregular heartbeat,
  • Confusion,
  • Hand tremor.

low blood sugar symptoms

This is a serious condition. When left untreated it can leads to seizures and coma. As a result it, is a life-threatening disease. One in every 25 patients suffering from type 1 diabetes dies due to severe hypoglycemia.

Treatment of Hypoglycemia

Eat few grams (15) of food like a fast-acting carbohydrate. Due to fast-acting carbohydrates, blood glucose levels increase.


Diagnosis of type-1 and type-2 Diabetes:

  • A1C (Glycated Haemoglobin test): It is a blood test that checks blood glucose level average for the past three months. If the A1C value > 6.5, it is an indication of diabetes.
  • Random blood sugar test: A blood sample can be taken at any time. If the blood sugar value is > 200mg/dL and the patient has signs of frequent urination, thirsts, etc., it indicates diabetes.
  • Fasting blood sugar test: A blood sample from the patient is taken after an overnight fast. Blood glucose levels > 126mg/dL indicates diabetes. Generally, these tests are repeated twice or thrice for the confirmation of the diseases.

pre diabetic Test list

Diagnosis of Diabetes Ketoacidosis:

These blood tests check for blood glucose levels, blood acidity levels, and ketones levels.

Blood sugar levels above 200 mm/dL, Ketones levels > 3.0, and high blood acidity levels indicate diabetes Ketoacidosis.

Diagnosis of Gestational Diabetes

To diagnose gestational diabetes, doctors generally ask for a blood glucose level test. These tests are conducted 24th to 28th week of pregnancy. But if you have a family history of diabetes, doctors may carry out these tests at the early stages of pregnancy.

An oral glucose tolerance test is used to diagnose gestational diabetes. In the oral glucose tolerance test, first, a blood sample is drawn after 1hour of eating. If the blood glucose levels are > 140mg/DL, then a 3-hour test is recommended. Glucose syrup is given, and after 3 hours of taking that glucose syrup, the blood glucose levels are repeated. Any value > 140mg/Dl indicates gestational diabetes.

Doctors shall repeat these tests 4th week to confirm gestational diabetes. If the values of the blood glucose levels are still high and > 140 mg/dL, it is diagnosed as gestational diabetes.

Guidelines If You Have Symptoms of Diabetes

Diabetes is a disease that can is manageable through proper lifestyle, weight loss programs, diet control, and proper treatment. Some guidelines to help you to manage diabetes efficiently are as follows:

  • Test regularly your blood glucose level. You can do this at home through glucometers.
  • Maintain proper diet chart and healthy lifestyle.
  • Do exercise regularly. As a result of it, you can control weight.
  • Take a low-carb diet. As a result of it, you can maintain proper weight.
  • Eat food that is high in fiber. As a result of it, you shall have proper weight management.
  • Eat more fruits, vegetables, and grains.
  • Lose weight if you are overweight.
  • If you have diabetes, you should cut more oily food from your diet to control weight gain.
  • Avoid Smoking.
  • Drink lots of water.
  • Don’t walk barefoot as it may cause damage to foot skin and cause foot pain and foot ulcers.
  • Avoid processed food and juices.
  • Avoid Sugary drinks, sugar syrup as they may cause hyperglycemia.
  • Always keep with you an apple or a few raisins if you have complaints of hypoglycemia.
  • Measure your sugar levels, especially after workouts, stress, and exercises.
  • Don’t ignore any signs or symptoms that can cause complications. As a result, the situation may become life-threatening.
  • Don’t take self-medication. Always consult the doctor before taking any medicine. Also, consult a doctor in case of any issues.
  • Avoid taking an overdose. Due to which you may create health issues.

Always have emergency numbers highlighted at your home.

Bottom Line

Remember, diabetes can be fatal. Therefore, early detection is the key to manage this disease efficiently. Through early detection and proper management, its reversal is possible. Yes, diabetes reversal is attainable through an appropriate lifestyle, medication, diet plan, and positive attitude. So maintain a positive attitude to overcome such challenges.


Are there any signs of uncontrollable or unmanaged Diabetes?

Yes, when Diabetes is left undiagnosed or unmanaged, there are some visible signs. Some of them are bowel problems; the bladder might not be working correctly, the mouth is dry, ulcers and slow-healing wounds, blurred vision, hearing issues, numbness in legs and feet, skin infection, etc.

What will I feel if my blood glucose levels are high?

You shall have an unusual thirst feeling; you have the desire for frequent urination, shortness of breath, and dry mouth.

Women diagnosed with gestational diabetes can they have lifelong diabetes?

Generally, after the pregnancy and everyday life returns, women don’t have any issue with Diabetes. But yes, in some cases, it is found that the women with gestational Diabetes had type-2 Diabetes later in their life. 


  1. Saeedi, P., Petersohn, I., Salpea, P., Malanda, B., Karuranga, S., Unwin, N., & IDF Diabetes Atlas Committee. (2019). Global and regional diabetes prevalence estimates for 2019 and projections for 2030 and 2045: Results from the International Diabetes Federation Diabetes Atlas. Diabetes research and clinical practice, 157, 107843.
  2. Janjira Jitraknatee, Chidchanok Ruengorn & Surapon Nochaiwong (2020). Prevalence and Risk Factors of Chronic Kidney Disease among Type 2 Diabetes Patients: A Cross-Sectional Study in Primary Care Practice. Retrieved from:
  3. Thomas R. Einarson, Annabel Acs, Craig Ludwig & Ulrik H. Panton (2018). Prevalence of cardiovascular disease in type 2 diabetes: a systematic literature review of scientific evidence from across the world in 2007–2017. Retrieved from:

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