Trouble sleeping can mean difficulty falling asleep, waking frequently during the night, or waking earlier than intended. Some people get enough hours of sleep but still wake feeling unrefreshed.

Sleep difficulties are common and can happen for many reasons, including stress, illness, or changes in daily routines. While occasional sleep problems are usually temporary, persistent difficulties may be a sign of an underlying sleep disorder or another health condition.

Understanding what is affecting your sleep is the first step toward finding solutions. This page explains common symptoms, possible causes, and when to seek support.

Trouble sleeping can affect both nighttime rest and how someone feels and functions during the day. Symptoms vary depending on the underlying cause and the person’s age.

Nighttime symptoms

• Taking a long time to fall asleep
• Frequent waking or difficulty returning to sleep
• Waking earlier than intended, being unable to return to sleep
• Sleep that feels light, broken, or unrefreshing

Daytime symptoms

• Fatigue, sleepiness, irritability, low mood, or headaches
• Difficulty concentrating, learning, remembering, or making decisions
• Reduced performance, relationship strain, or safety concerns
• Anxiety that makes it hard to unwind and get ready to sleep
• Worry about sleep, or changing routines to compensate for poor sleep

Pediatric symptoms

• Bedtime resistance, repeated requests (stories, hugs, water), or caregiver-dependent settling in children
• Daytime irritability, distractability, hyperactivity, falling grades, school avoidance, or unusual difficulty waking in the morning
• Read more about pediatric insomnia

Not everyone experiences the same symptoms. When sleep difficulties persist or begin to affect daily life, further evaluation can help identify the cause.

Trouble sleeping doesn’t end when the night is over. Poor sleep can affect your energy, mood, and concentration, making everyday activities more difficult. It can also influence how you respond to stress and manage daily responsibilities.

What happens during the day can then affect your next night’s sleep. For example, relying on extra caffeine, taking long naps, or spending more time awake in bed may sometimes make it harder to sleep, creating a cycle of disrupted nights and difficult days.

Breaking this cycle starts with understanding what is affecting your sleep. Finding routines that work for you, alongside appropriate treatment when needed, can help improve sleep and support better wellbeing throughout the day.

You do not need to know what is causing your sleep difficulties before asking for help. Talk with a healthcare professional if sleep problems persist, become more frequent, or begin to affect your health, mood, or daily activities. Many sleep problems can be treated, and getting support can help you find the right approach.

Red Flag: Seek prompt or urgent help if:

• You are falling asleep while driving or performing activities where sleepiness could put you or others at risk.
• Severe sleepiness makes it difficult to function safely during the day.
• You experience major changes in mood or behavior, overwhelming distress, or thoughts of self-harm.
• Persistent insomnia or stress that feels difficult to manage also deserves medical attention, even when there is no immediate safety concern.

A healthcare professional may review bedtime, wake time, sleep opportunity, time to fall asleep, awakenings, naps, daytime effects, routines, stress, mood, and observations from family members. A two-week sleep diary or actigraphy is often useful. The history can help distinguish insomnia from insufficient sleep opportunity and show how stress may be affecting the pattern. Learn more at Diagnosing Sleep Problems.

Clinicians also look for other explanations. Other sleep disorders or medical conditions can cause difficulty sleeping, especially on socially defined schedules, so evaluation is essential.