When to see a diabetologist
Common reasons people book a consultation.
- Newly diagnosed type 1 or type 2 diabetes
- Sugar readings that will not settle on current treatment
- Starting or adjusting insulin
- A foot ulcer, numbness, or a wound slow to heal
- Diabetes in pregnancy
What a diabetologist does
A diabetologist is a doctor who concentrates on diabetes: diagnosing it, controlling blood sugar, and preventing and treating the problems it can cause in the eyes, kidneys, nerves, feet, heart and blood vessels. Diabetes is very common in India, and many doctors focus their practice on it. Diabetologists usually come from general medicine, with an MBBS and an MD or DNB in general medicine, and add further training, diplomas or fellowships in diabetes; some are endocrinologists who have chosen to focus on diabetes. Training routes vary, so it is worth checking a doctor's degrees and registration.
The difference from endocrinology is scope. A diabetologist focuses on diabetes alone, while an endocrinologist covers all the hormone glands, diabetes included. Diabetologists treat with lifestyle advice, tablets, insulin and other injectable medicines, and they usually work with dietitians, diabetes educators, eye specialists and foot-care teams.
Diabetes care is mostly about the long run. Good control lowers the risk of complications, and regular checks of the eyes, kidneys and feet catch problems early, often before there are symptoms. A diabetologist is especially useful at diagnosis, when starting or adjusting insulin, when readings will not settle, in pregnancy, and when complications appear. Many people with straightforward type 2 diabetes are looked after well by a general physician.
- Confusion, sweating, shaking, unusual behaviour or drowsiness in someone on diabetes treatment, which can mean low blood sugar. If they cannot swallow safely or do not recover quickly, call 108
- Unconsciousness or a seizure in someone with diabetes
- Vomiting, abdominal pain, deep rapid breathing, great thirst and drowsiness, which can mean dangerously high sugar
- A foot that is red, hot, swollen or blackened, or a foot wound with fever
Conditions diabetologists treat
Type 2 diabetes
The commonest form, linked with weight, activity and family history, usually managed with lifestyle change and medicines.
Type 1 diabetes
The body stops making insulin, usually starting in childhood or young adulthood; insulin is needed for life.
Prediabetes
Blood sugar higher than normal but below the diabetes range, where lifestyle change can delay or prevent diabetes.
Diabetes in pregnancy
Diabetes first found in pregnancy, or pre-existing diabetes needing tight control, managed with the obstetrician.
Diabetic foot problems
Numbness, ulcers and infections of the feet, which need early attention to prevent serious damage.
Diabetic nerve damage
Tingling, burning or numbness in the feet and hands from long-standing high sugar.
Diabetic kidney disease
Kidney damage from diabetes, first seen as protein in the urine.
Diabetic eye disease
Damage to the retina that may have no symptoms early, found through regular eye checks.
Low blood sugar (hypoglycaemia)
Sugar dropping too low, usually from diabetes medicines, meals missed or unusual exercise.
Tests and procedures you may come across
Fasting and post-meal blood sugar
Standard tests for diagnosing and monitoring diabetes.
HbA1c
A blood test reflecting average blood sugar over the past two to three months.
Home glucose monitoring
Finger-prick checks with a glucometer, to guide day-to-day treatment.
Continuous glucose monitoring
A small sensor worn on the skin that tracks sugar levels through the day and night.
Kidney tests
Creatinine and urine albumin, checked regularly to catch kidney damage early.
Lipid profile
Cholesterol levels, since diabetes raises the risk of heart disease.
Eye examination
A dilated check of the retina, usually by an ophthalmologist, at regular intervals.
Foot examination
Checking sensation, pulses and skin to spot risk of ulcers.
Diabetologist or another specialist?
The nearest neighbouring specialities, and when each is the right door.
Before your first visit
- Bring all sugar and HbA1c reports with dates, and your glucometer or a written log of home readings.
- Bring every medicine and insulin you use, including the pen or vial, and say exactly how and when you take them.
- Bring kidney, cholesterol and eye check reports if you have them.
- Mention any episodes of low sugar, such as shakiness, sweating or confusion, and what you did about them.
- Expect your feet to be examined, so wear footwear that is easy to remove.
Qualifications and registration to check
Registered with the National Medical Commission or a state medical council. The number can be searched on the NMC's Indian Medical Register. Every profile on The Doctor Index shows the registration number and says whether it has been checked against the register.
How to check a registrationQuestions about seeing a diabetologist
What is the difference between a diabetologist and an endocrinologist?
A diabetologist concentrates on diabetes and its complications. An endocrinologist treats all hormone disorders, including diabetes, thyroid, pituitary and adrenal conditions.
What qualifications should a diabetologist have?
Training routes vary. Many diabetologists have an MBBS and an MD or DNB in general medicine with further diabetes training; some are endocrinologists with a DM or DrNB. Check the degrees listed and the registration with the NMC or a state medical council.
Does starting insulin mean my diabetes is very bad?
Not necessarily. Insulin is needed in type 1 diabetes and often in pregnancy, and many people with type 2 diabetes need it at some stage. It is a treatment choice, not a failure.
What are the signs of low blood sugar?
Shakiness, sweating, a fast heartbeat, hunger, confusion, unusual behaviour and drowsiness. Your doctor will explain what to do; if the person cannot swallow safely or does not recover quickly, call 108.
How often should someone with diabetes have eye and kidney checks?
Usually at least once a year, or more often if problems are found. Your doctor will advise a schedule based on your results.
Also searched as: diabetes doctor, sugar doctor, diabetes specialist.
Written by The Doctor Index on 27 Sep 2026, and has not yet been reviewed by a clinician. General information, not advice about your own situation.