It happens when blood sugar levels rise due to problems with the use or production of insulin.
It can appear at any age, but it is more likely to occur after the age of 45 yearsTrusted Source.
It affects over 30 millionTrusted Source Americans, according to the United States Centers for Disease Control and Prevention (CDC), and it accounts for 90–95 percent of diabetes cases.
This article looks at the early signs and symptoms of type 2 diabetes, the risk factors, and potential complications.
What is type 2 diabetes?
People with type 2 diabetes do not make or use insulin correctly.
Insulin is a hormone that regulates the movement of blood glucose, or sugar, into cells, which use it as energy.
When sugar cannot enter cells, this means:
too much glucose collects in the blood
the body’s cells cannot use it for energy
A doctor may diagnose diabetes if a person’s blood sugar levels are 126 milligrams per deciliter (mg/dl) or above after fasting for 8 hours.
Symptoms
The symptoms of high blood sugar in type 2 diabetes tend to appear gradually. They may have some or all the classic symptoms of type 2 diabetes.
They may also experience one or more of the following:
flu-like fatigue, which includes feeling lethargic and chronically weak
urinary tract infections
numbness and tingling in the hands, arms, legs, and feet due to circulation and nerve damage
dental problems, including infections of the mouth and red, inflamed gums
Early signs
Most people do not experience symptoms in the early stages, and they may not have symptoms for many years.
A possible early sign of type 2 diabetes is darkened skin on certain areas of the body, including:
the neck
the elbows
the knees
the knuckles
This is known as acanthosis nigricans.
Other early symptoms include:
frequent bladder, kidney, or skin infections
cuts that take longer to heal
fatigue
extreme hunger
increased thirst
urinary frequency
blurred vision
A person may have mild or subtle symptoms for many years, but these can become in time. In the early stages, however, it is easy to treat.
Symptoms of hypoglycemia include:
confusion
dizziness
feeling faint
heart palpitations
rapid heartbeat
mood changes
loss of consciousness
sweating
clamminess
If symptoms are mild, a person can often resolve low blood sugar levels by consuming:
a few pieces of hard candy
a cup of orange juice
a teaspoon of honey
a glucose tablet
The person should then wait 15 minutes, test their blood sugar, and if it is still low, they should take another glucose tablet or sweet.
When levels return to above 70 mg/dl, the person should eat a meal, to stabilize their glucose levels.
If they remain low for 1 hour or longer, or if symptoms worsen, someone should take the person to the emergency room.
Anyone who has frequent or severe hypoglycemic episodes should speak to their doctor, as they may need to adjust their treatment plan.
Hyperglycemia and diabetic ketoacidosis (DKA)
If blood sugar levels rise too far, hyperglycemia can result.
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