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Which diabetes symptoms need urgent care for serious complications?

Answered byDr. M.V. Rama MohanMBBS, MD (General Medicine), DM (Endocrinology)
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Patient's Query

33 years oldMale

I have diabetes and I’m trying to manage it well. But I get confused about what symptoms are “normal” and what symptoms mean something serious is happening. 

People talk about sugar going high, sugar going low, heart attack, stroke, kidney issues, eye bleeding, foot infection, and nerve damage. I’m scared I may miss warning signs. 

Which symptoms should make me worry and seek immediate medical help? Also, I heard low sugar can be dangerous, and that heart attacks in diabetes can be silent. Can you explain in a simple way what to watch for, so I know when to act quickly?

Endocrinologist Answers

Dr. M.V. Rama Mohan
MBBS, MD (General Medicine), DM (Endocrinology)EndocrinologistView Profile

This is a smart question. In diabetes, the goal is to catch danger signs early.

Diabetes Symptoms Urgent Care For Serious Complications

Urgent symptoms linked to high sugars (Acute Complications)

Seek emergency care if you have:

  • Repeated vomiting, severe stomach pain, fast deep breathing, fruity breath, confusion, severe weakness
  • Very high sugars with dehydration signs like extreme thirst and passing urine a lot
    These can suggest DKA or severe metabolic illness and should not wait.

Urgent symptoms linked to low sugars (Hypoglycaemia)

  • Watch for sweating, shaking, sudden hunger, palpitations, confusion, drowsiness, or fainting.
  • If you cannot check a glucometer, treat first with fast sugar. If symptoms improve quickly, it was likely low sugar. Severe low sugar is an emergency.[1,2]
  • Recurrent lows are more common if you have kidney disease or are on insulin or sulfonylureas.

Eye symptoms that need same-day attention

  • Sudden new floaters, flashes, curtain-like shadow, sudden vision drop.
  • Retinopathy can be silent early, but these symptoms are red flags.[1,2]

Nerve and foot danger signs

  • New weakness, foot drop, rapidly worsening numbness, trouble walking, bladder or bowel issues
    Diabetic neuropathy is common, but sudden weakness needs urgent evaluation to rule out other causes.
  • Foot ulcer, spreading redness, swelling, fever, black skin, severe pain, or loss of sensation with a wound

Macrovascular emergencies: Heart and Brain.

Diabetes can blunt typical pain. Seek help if you get:

  • New breathlessness, unusual fatigue, sweating, nausea, jaw or shoulder discomfort with exertion
  • Stroke signs: face droop, arm weakness, speech trouble, sudden vision loss, severe dizziness Use FAST and call emergency services.[4,2]

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Disclaimer: The information provided in this Q&A is for educational purposes only and should not be considered as medical advice. Always consult with a qualified healthcare professional for personalized medical guidance and treatment recommendations.

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