Does obstructive sleep apnoea cause excessive sweating?

In obstructive sleep apnoea, the upper airway narrows or closes during sleep. The body responds to disrupted breathing with brief arousals and changes in stress signals. These responses can raise effort, heart rate and body heat, leading to damp sleepwear or bedding, even when the bedroom is cool.

Night sweating alone does not establish the cause. Reflux, infection, hormonal changes, medicines, alcohol and other sleep problems can also produce sweating. Clues that make sleep apnoea worth discussing include loud snoring, witnessed pauses in breathing, waking with choking or a dry mouth, morning headaches, and daytime sleepiness.

Keep a short record of when sweating happens, whether clothes or bedding become wet, and any snoring, gasping or breathing pauses noticed by another person. Note daytime tiredness and medicines that may affect sleep or sweating. Share this information with a clinician.

A clinician can assess your symptoms and health history and may arrange a sleep assessment. If obstructive sleep apnoea is confirmed, treatment is tailored to the pattern and severity of airway blockage and may include a device, positional measures or other options. Do not drive when severe sleepiness makes it difficult to stay alert.

Arrange medical advice if night sweating is recurrent, unexplained, or accompanied by loud snoring, choking awakenings or marked daytime sleepiness. Seek urgent help for severe breathing difficulty while awake, chest pain, fainting, confusion, or blue or grey lips. These symptoms need prompt assessment rather than waiting for a routine sleep review.

Ask: Could my night sweating and breathing symptoms fit obstructive sleep apnoea? What other causes should be considered? Would I benefit from a sleep study? How can I reduce safety risks from daytime sleepiness? Which treatment options would suit my health and sleep pattern?