Shift work sleep disorder

Overview

Shift work sleep disorder is a condition that affects people whose work schedules fall outside the typical 9-to-5. It happens when your body's internal clock, or circadian rhythm, gets out of sync with your sleep-wake schedule. This can make it hard to fall asleep, stay asleep, or feel rested.

Yes, it is common. Many people who work nights, rotating shifts, or early mornings experience some symptoms of shift work sleep disorder.

It primarily affects people whose work schedules require them to be awake when their body naturally wants to sleep. This includes nurses, factory workers, police officers, pilots, and emergency responders.

Symptoms

Common symptoms

• Feeling very sleepy during your work shift
• Trouble falling asleep or staying asleep when you have time off
• Difficulty concentrating or making decisions
• Irritability or mood changes
• Low energy or fatigue

Symptoms in children

• This condition mainly affects adults who work non-traditional hours. Children are rarely diagnosed with it.

Symptoms in older adults

• Older adults may be more sensitive to disruptions in their internal clock, so symptoms like fatigue and trouble adjusting to a day schedule may be more pronounced.

Causes

Main causes

• Working during the time your body naturally wants to sleep, which disrupts your internal clock (circadian rhythm)
• An irregular or changing sleep schedule that doesn't allow your body to settle into a routine

Risk factors

• Working night shifts or rotating shifts
• Long work hours with few breaks
• Having a long commute that cuts into sleep time

When to see a doctor

See a doctor urgently if:

• If you feel dangerously sleepy while driving or at work, or if you have had an accident due to drowsiness

Book a routine appointment if:

• If sleep problems last more than a few weeks
• If your symptoms affect your health, mood, or quality of life

Diagnosis

A doctor will talk with you about your work schedule, sleep patterns, and symptoms. They may ask you to keep a sleep diary or wear a small device to track your activity and sleep.

Tests that may be done

• Sleep diary – a record of when you sleep and wake up
• Actigraphy – a wrist-worn device that tracks movement and sleep
• Sometimes a sleep study (polysomnography) to rule out other sleep disorders

What to expect at your appointment

The doctor will want to understand your schedule and how you feel. There is no single test – the diagnosis is based on your history. They will also check for other possible causes of your symptoms.

Treatment

Treatment focuses on helping you get better sleep despite your work schedule. This includes good sleep habits, timed light exposure, and sometimes medicines or other therapies – always under a doctor's guidance.

Self-care at home

• Keep a consistent sleep schedule, even on your days off
• Make your bedroom dark, quiet, and cool
• Avoid caffeine and screen time close to your planned sleep time
• Take short, planned naps before a shift if possible

Medical treatments

Your doctor may suggest timed light therapy to help reset your body clock. In some cases, they might prescribe medications that promote sleep or help keep you awake during shifts. These should only be used under medical supervision – never take any sleep or alertness medication without talking to a healthcare provider.

Living with this condition

Plan your sleep like you plan your work. Use blackout curtains, earplugs, and a white noise machine. Tell family and friends when you need undisturbed sleep. Give yourself time to adjust when your schedule changes.

Lifestyle tips

• Stick to a set sleep routine, even on days off
• Limit caffeine and avoid large meals close to bedtime
• Use bright light when you need to be awake
• Take short, strategic naps before a shift
• Stay physically active, but avoid heavy exercise right before sleep

Diet and exercise

Eat a balanced diet with regular meals. Avoid heavy or spicy meals before sleep. Regular exercise can boost your alertness and help you sleep better, but try not to exercise too close to your sleep time.

Mental health and emotional wellbeing

Shift work can increase stress and affect your mood. It is normal to feel irritable or down at times. If you feel overwhelmed or have thoughts of harming yourself, it is very important to reach out for help. Call your local crisis support line or talk to a healthcare provider right away.

Prevention

Shift work sleep disorder cannot always be prevented if you must work non-traditional hours. But you can reduce its impact by carefully planning your sleep schedule, using light exposure wisely, and sticking to good sleep habits.

Complications

If left untreated

• Higher risk of accidents at work or while driving
• Long-term health issues such as heart disease, digestive problems, and weakened immune system
• Increased risk of mood disorders like depression and anxiety

Long-term outlook

With the right strategies and support, most people with shift work sleep disorder can manage their symptoms effectively. It may take some trial and error to find a routine that works, but you can lead a healthy, productive life.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.