disturbed sleep
From Longman Dictionary of Contemporary Englishdisturbed sleepdisturbed sleepsleep that is interrupted → disturbedExamples from the Corpusdisturbed sleep• Sarah experiences more or less constant pain from a back problem, indigestion, and disturbed sleep.• This may be associated with disturbed sleep and irritability and so the scratching may not be noticed.• Conversely, disturbed sleep patterns can cause periods to become irregular or stop altogether.