What Are 10 Warning Signs of Diabetes?

If you’re reading this because something feels “off” — you’re thirsty all the time, you’re peeing nonstop, you’re exhausted for no reason — you’re not overthinking it. In the ER, I see a lot of people who ignored early signs of diabetes because life was busy… until symptoms got scary.

Here in Angleton and nearby Brazoria County communities, many families are juggling work, kids, and long commutes. And when you don’t feel “sick-sick,” it’s easy to delay care. Angleton’s population is estimated around 20,979 (2024), and about 19.1% of residents are 65+, which matters because age increases diabetes risk.

Let’s walk through the 10 warning signs of diabetes in plain language, what they mean, and when symptoms cross the line into “go to the ER now.”

10 Warning Signs of Diabetes

1. You’re peeing a lot (especially at night)

When blood sugar is high, your kidneys try to flush out extra glucose through urine. The result: frequent bathroom trips. The CDC lists frequent urination as a common diabetes symptom.

2. You’re unusually thirsty

Peeing more pulls water out of your body — so your thirst goes up. The CDC lists increased thirst as a classic symptom.

3. You feel hungrier than normal

Even though there’s glucose in your bloodstream, your cells may not be able to use it correctly. The CDC includes increased hunger as a common symptom.

4. You’re losing weight without trying

This can happen when your body can’t use glucose properly and starts breaking down fat and muscle for fuel. The CDC lists unintended weight loss as a symptom seen in diabetes.

5. You’re tired all the time

High blood sugar and poor glucose use can leave you feeling drained. The CDC lists fatigue as a symptom.

6. You’re more irritable or “off” emotionally

When your body is stressed (dehydration, poor sleep, blood sugar swings), mood changes can show up. The CDC notes people may feel irritable or moody.

7. Your vision gets blurry

Blurry vision can happen when blood sugar affects fluid balance in the eye. The CDC lists blurry vision as a common symptom.

8. You’re getting frequent UTIs or yeast infections

High glucose can make infections more likely or harder to clear. The CDC specifically includes frequent UTIs or yeast infections as diabetes symptoms.

9. Cuts, sores, or wounds are taking longer to heal

High blood sugar can affect circulation and the body’s healing response. Mayo Clinic notes that people with diabetes may notice slow-healing sores, especially on the feet, and may have more frequent bladder/vaginal yeast infections.

10. Tingling, numbness, or “pins and needles” in your feet

Nerve damage can start subtly, and it often begins in the feet. The CDC explains diabetes-related peripheral nerve damage can cause tingling, numbness, weakness, and other symptoms.

A warning sign many people miss: dark, velvety skin patches

Sometimes people notice a darker, thicker “velvety” patch of skin — often on the neck, armpits, or groin — and shrug it off as friction or pigmentation.

But acanthosis nigricans can be linked to insulin resistance, which is strongly associated with type 2 diabetes. Mayo Clinic notes that insulin resistance is related to type 2 diabetes and is commonly present in people with acanthosis nigricans.
The American Academy of Dermatology also notes it can be a sign of prediabetes.

Are these signs more likely to be type 1 or type 2 diabetes?

In real life, symptoms can overlap.

• Type 2 diabetes often develops slowly, and people can have symptoms for a long time before realizing what’s happening.
• Type 1 diabetes can become serious quickly — and importantly, the CDC notes that people with type 1 diabetes in early stages may have no symptoms, and sometimes the first clear sign can be a dangerous emergency called DKA (more on that below).

Who is more likely to develop diabetes?

Here’s who I watch more closely in the ER (and who should take “minor” symptoms more seriously):

• Family history of diabetes
• Age 45+ (risk rises with age)
• History of gestational diabetes (during pregnancy)
• Prediabetes in past labs
• High blood pressure or high cholesterol
• Carrying extra weight, especially around the abdomen
• Low physical activity
• Certain medical conditions like PCOS (often linked with insulin resistance)

And zooming out: in Texas, the American Diabetes Association estimates about 12% of adults have diagnosed diabetes.

When diabetes symptoms become an emergency

Most diabetes symptoms build over time — but some situations are not “wait and see.”

Go to the ER now if you have diabetes symptoms PLUS any of these

• Vomiting or severe nausea
• Stomach pain
• Fast, deep breathing
• Fruity-smelling breath
• Severe weakness or extreme tiredness
• Confusion or acting “not like yourself”
• Signs of dehydration: very dry mouth/skin, dizziness, fainting

These can point toward diabetic ketoacidosis (DKA) — a life-threatening condition where ketones build to dangerous levels. The CDC notes early DKA symptoms can include thirst and urinating more, and if untreated, more severe symptoms can appear quickly, including fast deep breathing, dry skin/mouth, fruity breath, nausea/vomiting, and stomach pain.

Call 911 immediately if

• Someone is unconscious, having a seizure, or you can’t wake them
• Severe confusion, trouble breathing, or collapse

(Those situations are emergencies no matter the cause — diabetes-related or not.)

What I tell patients: what to do next

If you have one symptom once, it doesn’t automatically mean diabetes. But if you have multiple symptoms (especially thirst + frequent urination + fatigue), don’t brush it off.

Practical next steps

• Write down your symptoms (when they started, how often they happen, what makes them worse).
• If you have access to recent labs, look for terms like A1C or fasting glucose — and share them with a clinician.
• If you already have diabetes and feel “off,” pay attention to dehydration + vomiting + breathing changes (that’s when I worry about DKA).

If you’ve been dealing with several of these symptoms — especially thirst, frequent urination, fatigue, blurry vision, infections, or numbness/tingling — don’t ignore your body.

Visit Angleton ER — open 24/7.

Frequently Asked Questions