Some possible signs of diabetes can become noticeable during the night, when changes in blood sugar may affect sleep and normal body functions. Frequent nighttime urination can occur when high blood sugar causes the kidneys to remove excess glucose through urine, which can also contribute to increased thirst and waking with a dry mouth.

Other nighttime symptoms can include sweating, shakiness, hunger, a racing heartbeat, or sudden awakenings, particularly when blood sugar becomes too low. Tingling, burning, or “pins and needles” sensations in the legs may also disturb sleep, while sleep problems such as loud snoring or pauses in breathing can occur alongside type 2 diabetes and may affect overall blood sugar control.

These symptoms can have many possible causes, so they do not necessarily mean someone has diabetes. However, if several occur regularly—especially alongside persistent tiredness or poor-quality sleep—it is worth discussing them with a healthcare professional. Appropriate evaluation and blood testing can help determine whether blood sugar problems are involved and support early treatment when needed.