While it is recommended to first consult a doctor for a professional diagnosis there a number of symptoms that can indicate that an individual has diabetes.
The most common symptom is a systemic loss of weight which is common for both type 1 and type 2 diabetes. Likewise heavy breathing can be a sign of type 1 diabetes.
The digestive and excretive systems of our bodies can also be affected by diabetes, with nausea, vomiting and abdominal pains being more common in type 1 and urinary problems such as polyuria and glycosuria possibly indicating type 2 diabetes.
Other symptoms include blurred eye vision which can lead to blindness and central nervous issues such as lethargy, stupor, polydipsia and polyphagia.