Diabetes feels like constant thirst, frequent urination, intense hunger, and persistent tiredness, often accompanied by blurry vision, slow-healing sores, increased infections, and sometimes unexplained weight loss (Type 1) or gain (Type 2). Symptoms can appear suddenly and severely in Type 1, while Type 2 often develops slowly with mild or no noticeable signs, sometimes going undiagnosed for years.
Early signs of diabetes often include increased thirst and frequent urination, extreme hunger, fatigue, blurred vision, slow-healing sores, and unexplained weight loss (especially Type 1) or weight gain (Type 2), but Type 2 symptoms can be mild or absent, so regular checkups are key. Tingling in hands/feet, frequent infections (yeast, UTIs), and mood changes can also appear.
Urinating often. Feeling very thirsty. Feeling very hungry—even though you are eating. Extreme fatigue.
Three common signs of diabetes are increased thirst and frequent urination, extreme tiredness, and blurry vision or slow-healing sores, often stemming from high blood sugar levels affecting the body. These symptoms, sometimes called the "Three Ps" (polyuria, polydipsia, polyphagia), can develop slowly in Type 2 diabetes or quickly in Type 1.
Yes, diabetes can cause easier bruising and slow-healing bruises due to high blood sugar damaging blood vessels, affecting skin elasticity (thinning it), and impacting nerve function, which reduces sensation to minor injuries. Poor circulation from diabetes also means bruises take longer to heal because less oxygen and fewer nutrients reach the skin, impairing repair. Bruising can also occur from needles used for glucose monitoring or insulin injections, which can be more noticeable in diabetics.
Symptoms of hyperglycaemia
Peripheral sensorimotor neuropathy
Red flag signs of diabetes symptoms
Feeling extremely hungry or thirsty. Feelings similar to drunkenness. Unusual behaviors, which may also indicate low blood sugar. Infections, bloody or swollen gums, or foot sores.
Five common signs of prediabetes include increased thirst/urination, constant fatigue, blurry vision, dark skin patches (acanthosis nigricans), and slow-healing cuts or frequent infections, though prediabetes often has no noticeable symptoms, making early detection key. These signs often signal higher blood sugar levels, indicating your body isn't using insulin effectively.
The 4 Ps of diabetes – polyuria, polydipsia, polyphagia, and sometimes a fourth P – are key signs of high blood sugar. These symptoms have been known for centuries as signs of diabetes mellitus. Learning about the history of these symptoms helps us understand their importance.
Type 2 diabetes symptoms often take several years to develop. Some people don't notice any symptoms at all. Type 2 diabetes usually starts when you're an adult, though more and more children and teens are developing it. Because symptoms are hard to spot, it's important to know the risk factors for type 2 diabetes.
Changes in blood sugar can cause rapid changes in mood and other mental symptoms such as fatigue, trouble thinking clearly, and anxiety. Having diabetes can cause a condition called diabetes distress which shares some traits of stress, depression and anxiety.
Certain diabetes complications, such as damage to blood vessels and nerves, can affect your sweat glands so your body can't cool as effectively. That can lead to heat exhaustion and heat stroke, which is a medical emergency. People with diabetes get dehydrated (lose too much water from their bodies) more quickly.
Fasting blood glucose test
This is a blood test that measures blood sugar levels after fasting. If your fasting blood sugar level is between 100 mg/dL and 125 mg/dL, it's an indication that you're prediabetic.
How do I check?
To manage diabetes, avoid sugary drinks, refined carbs (white bread, pasta, rice), processed foods, sweets (candy, cakes), unhealthy fats (fried foods, trans fats, high-fat dairy), and limit red/processed meats, while focusing on fiber-rich, whole foods. Key is to control blood sugar spikes by reducing added sugars, sodium, unhealthy fats, and simple carbs.
Ten key warning signs of diabetes include increased thirst and urination, extreme hunger, fatigue, blurred vision, slow-healing sores, unexplained weight loss, tingling/numbness in hands or feet, frequent infections, and sometimes dark skin patches (acanthosis nigricans), all indicating high blood sugar levels needing medical attention.
High blood sugar (hyperglycemia) often feels like extreme thirst, frequent urination, and constant tiredness, with other signs including blurred vision, headaches, irritability, and sometimes nausea or unexplained weight loss, as your body struggles to use sugar for energy. These symptoms arise because sugar builds up in your blood, pulling fluids from tissues, leading to dehydration and fatigue.
Diabetes often starts with mild symptoms such as feeling very hungry and tired, needing to pee a lot, being very thirsty, having a dry mouth, itchy skin, and blurry vision. Type 1 diabetes symptoms appear quickly and are more severe, while type 2 symptoms develop slowly.
Children may have heavier nappies or they may start wetting the bed because they're peeing more. The easiest way to remember these symptoms is the 4 Ts: toilet, thirsty, tired, thinner. Other symptoms can include: blurred vision.
Many people with diabetes have peripheral artery disease (PAD), which reduces blood flow to the feet. Also, many people with diabetes have neuropathy, causing you to not feel your feet. Together, these problems make it easy to get ulcers and infections that may lead to amputation.
Physical symptoms: reduced activity, low energy, tiredness, decreased physical endurance, increased effort to do physical tasks, general weakness, heaviness, slowness or sluggishness, nonrestorative sleep, and sleepiness.
Diabetic cheiroarthropathy is also called diabetic hand syndrome or stiff hand syndrome. People with this complication of diabetes lose mobility in their hands. Diabetic cheiroarthropathy affects around 30% of patients with poorly managed type 1 and type 2 diabetes.
With gastroparesis, you may have that "stuffed" feeling, bloating, discomfort, or pain after eating even a small amount of food. This can happen soon after you start eating or long after you finish your meal if your stomach isn't emptying properly. Other symptoms include heartburn, nausea, vomiting, and poor appetite.
A lack of B12 damages the myelin sheath that surrounds and protect nerves. Without this protection, nerves cease to function properly and conditions such as peripheral neuropathy occur. Even B12 deficiency that is relatively mild may affect the nervous system and the proper functioning of the brain.