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Mind, Mood & Sleep

Symptoms of mind, mood and sleep: low mood, anxiety feelings, poor sleep, snoring, stress-related physical symptoms and problems with concentration. These pages are written factually and without stigma, explain common associations, and point to the situations where prompt professional help matters most.

This page lists all 13 of them in the guide. Open any symptom for its possible causes, red-flag list and frequently asked questions.

Brain fogBrain fogMind & SleepFeeling anxiousFeeling anxiousMind & SleepInsomniaInsomniaMind & SleepLosing interest in thingsLosing interest in thingsMind & SleepLow moodLow moodMind & SleepPanic attacksPanic attacksMind & SleepPhysical symptoms of stressPhysical symptoms of stressMind & SleepPoor concentrationPoor concentrationMind & SleepSleeping too muchSleeping too muchMind & SleepSleepwalkingSleepwalkingMind & SleepSnoringSnoringMind & SleepTeeth grinding at nightTeeth grinding at nightMind & SleepWaking up tiredWaking up tiredMind & Sleep
SymptomCategoryWhat it can feel like
Brain fogMind & SleepBrain fog is the subjective sense of slowed, cloudy thinking — words on the tip of the tongue, losing threads mid-task, mental effort for things that used to be…
Feeling anxiousMind & SleepFeeling anxious means persistent worry, tension and apprehension that is hard to switch off — racing thoughts, restlessness, muscle tension, poor concentration…
InsomniaMind & SleepInsomnia means difficulty falling asleep, staying asleep, or waking too early, despite adequate opportunity — with daytime consequences: fatigue, poor concentration…
Losing interest in thingsMind & SleepLosing interest in things (anhedonia) means activities, people and pleasures that used to engage you now feel flat or effortful — hobbies shelved, friends unanswered…
Low moodMind & SleepLow mood means feeling sad, empty, tearful or flat most of the day, most days, with reduced pleasure in things that usually matter. Everyone has low days; low mood…
Panic attacksMind & SleepA panic attack is a sudden surge of intense fear peaking within minutes: racing or pounding heart, breathlessness or choking feelings, chest tightness, trembling…
Physical symptoms of stressMind & SleepPhysical symptoms of stress are the body's alarm hardware running too long: headaches, muscle tension (neck, jaw, back), stomach churning and bowel changes…
Poor concentrationMind & SleepPoor concentration means difficulty sustaining attention on tasks, reading, conversations or work — losing the thread, re-reading lines, making careless errors.…
Sleeping too muchMind & SleepSleeping too much (hypersomnia) means regularly sleeping far beyond the usual adult range — nine, ten or more hours — and still feeling unrefreshed, or falling asleep…
SleepwalkingMind & SleepSleepwalking means getting up and performing activities — walking, talking, sometimes eating or attempting complex tasks — while still asleep, with little or no memory…
SnoringMind & SleepSnoring is the sound of a partially obstructed upper airway vibrating during sleep. Simple snoring is common and mainly a partner problem; snoring becomes medically…
Teeth grinding at nightMind & SleepTeeth grinding at night (sleep bruxism) means clenching or grinding the teeth during sleep, often loudly enough for a partner to hear, producing morning jaw ache…
Waking up tiredMind & SleepWaking up tired means starting the day unrefreshed despite spending enough hours in bed — heavy head, grogginess that takes hours to lift, and reaching for caffeine to…
Please note: This page is educational information about a symptom. A symptom alone cannot diagnose any condition, and the causes listed here are possibilities, not a diagnosis. If you are worried about a symptom — especially one that is new, severe, getting worse or not going away — please see your own clinician, who can examine you and arrange tests. In an emergency, call your local emergency number.