Five diabetes-related symptoms that may become more noticeable at night include:
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Frequent urination (nocturia) — High blood sugar can cause the kidneys to remove extra glucose through urine, leading to repeated nighttime bathroom trips.
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Excessive thirst or a dry mouth — Fluid loss from frequent urination can leave you unusually thirsty, including during the night.
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Night sweats — In people taking insulin or certain diabetes medicines, low blood sugar (hypoglycemia) can cause sweating, shakiness, or a racing heartbeat during sleep.
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Restless or disrupted sleep — Blood-sugar fluctuations, thirst, urination, or other symptoms can repeatedly interrupt sleep.
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Tingling, burning, or numbness in the feet — Diabetes-related nerve damage (diabetic neuropathy) can be more noticeable at night and may interfere with sleep.
These symptoms do not by themselves diagnose diabetes. If you’re repeatedly experiencing several of them, a blood-glucose test such as fasting glucose or HbA1c can help determine whether diabetes or prediabetes is present.
If you have severe weakness, confusion, difficulty breathing, vomiting, or loss of consciousness, seek urgent medical care.
