Type 1 Diabetes

Type 1 diabetes is a chronic autoimmune condition in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body produces little to no insulin, a hormone essential for regulating blood sugar levels. Without insulin, glucose cannot enter cells for energy, leading to high blood sugar levels that require lifelong management through insulin therapy. While type 1 diabetes can develop at any age, it is most commonly diagnosed in children and adolescents, particularly between the ages of 10 and 14.

When to consult a doctor for type 1 diabetes

If new or worsening diabetes symptoms appear

See a GP if you experience increased thirst, frequent urination, unexplained weight loss, extreme fatigue, or blurred vision, as these may indicate poor blood sugar control or the onset of complications.

If blood sugar levels are unstable or ketosis symptoms develop

Consult a doctor if your blood sugar levels are consistently too high or too low, or if you develop nausea, vomiting, abdominal pain, fruity-smelling breath, confusion, or rapid breathing, which may be warning signs of diabetic ketoacidosis (DKA).

If infections occur or treatment adjustments are needed

Seek medical advice if you experience frequent infections, slow-healing wounds, need insulin dose adjustments or prescription refills, or require referrals for endocrinologists or pathology tests to support ongoing diabetes management.

This guide does not replace professional care. Consult a doctor to manage your symptoms. In emergencies, call 000. The content is research-backed & medically reviewed by Dr. Ammar AL-ANI, MBChB, CCBST, AMC

Symptoms

Some of the symptoms of type 1 diabetes include:

Frequent urination: Increased need to urinate, especially at night.
Excessive thirst: Constant feeling of thirst, even after drinking water.
Unexplained weight loss: Despite eating normally, the body burns fat and muscle for energy.
Extreme fatigue: Persistent tiredness due to the body’s inability to use glucose for energy.
Increased hunger: Constant hunger as the body lacks insulin to convert food into energy.
Blurry vision: High blood sugar levels can cause swelling in the eye’s lens, leading to vision issues.
Slow-healing wounds: Cuts, sores, or infections take longer to heal.
Irritability & mood changes: Blood sugar fluctuations may lead to mood swings.
Fruity-smelling breath: A sign of diabetic ketoacidosis (DKA), a dangerous condition requiring urgent medical attention.
Tingling or numbness: Prolonged high blood sugar can affect nerve function.

Causes

Type 1 diabetes is an autoimmune condition, meaning the body’s immune system mistakenly attacks insulin-producing beta cells in the pancreas. This leads to little or no insulin production, requiring lifelong insulin therapy.

Key causes include:

Genetics: Family history increases the risk.
Autoimmune response: The body’s immune system mistakenly destroys pancreatic cells.
Environmental triggers: Viruses, infections, or certain environmental factors may trigger the onset.

Unlike Type 2 diabetes, lifestyle factors like diet and exercise do not cause Type 1 diabetes.

Complications

Short-term complications:

Diabetic Ketoacidosis (DKA): A life-threatening condition caused by high blood sugar and lack of insulin, leading to excess ketone production.
Hypoglycaemia Too much insulin or not enough food can cause dizziness, confusion, sweating, or fainting.
Hyperglycaemia Can lead to dehydration, fatigue, and blurred vision.

Long-term complications:

Heart disease & stroke: High blood sugar can damage blood vessels, increasing cardiovascular risks.
Kidney disease: Excess sugar in the blood can strain the kidneys.
Nerve damage: Can cause tingling, numbness, or pain in the hands and feet.
Eye problems: High glucose levels can damage the retina, leading to vision loss.
Foot ulcers & infections: Poor circulation and nerve damage increase the risk of non-healing wounds.

If you are experiencing such symptoms, speak to a GP first to discuss your health.

Telehealth for Diabetes management

Hola Health provides a convenient way for you to consult a doctor online, 24/7 across Australia. Our AHPRA-registered Australian online GP will conduct a comprehensive assessment to provide the best possible care.

Clinical note: An online GP assessment helps provide medical advice for your diabetes symptoms and evaluate if a face-to-face consultation or physical examination is needed. Online GPs can provide prescriptions, referrals or GP medical certificates if clinically indicated. Telehealth is a complementary service; it is not suitable for the initial diagnosis of diabetes or the management of acute complications. Regular physical examinations (including foot checks and blood pressure monitoring) and in-person pathology tests (such as HbA1c) are mandatory for safe long-term management. After-hours bulk billing is available for eligible patients during Medicare-defined periods; otherwise, private fees apply. Consultations are secure, encrypted, and Australian-stored (in compliance with the Australian Privacy Principles). In case of confusion, persistent vomiting, fruity-smelling breath, or rapid breathing (signs of DKA), call 000 immediately. We recommend sharing your consult summaries with your regular GP and Endocrinologist to ensure continuity of care.