Symptom Encyclopedia
Browse symptoms and learn about possible related conditions
All
Stomach & digestion
Arms, legs & joints
Back & spine
Chest & breathing
Children & newborns
Ear, nose & throat
Eyes & vision
General & whole body
Head & neurological
Heart & circulation
Men's health
Mood, sleep & mental health
Mouth & teeth
Pelvis & urinary
Skin, hair & nails
Women's health
inside the ears and mouth
1 related conditions
inside the nappy area
1 related conditions
Insomnia
1 related conditions
intense but unstable relationships
1 related conditions
involuntary blinking or twitching of the eyelids
1 related conditions
iron, vitamin b12 or folic acid deficiency
1 related conditions
irregular and/or unusually fast heart rate (palpitations)
1 related conditions
irregular periods or heavy periods
1 related conditions
irritability
7 related conditions
irritability and wakening up during the night
1 related conditions
irritability or tiredness
1 related conditions
irritable bowel syndrome (ibs)
1 related conditions
irritable bowel syndrome and other problems with the function of your stomach and bowel
1 related conditions
irritable, low mood or anxiety
1 related conditions
irritated and red eyes
1 related conditions
irritated and swollen eyelids
1 related conditions
irritated skin around the anus
1 related conditions
irritating cough
1 related conditions
irritation, burning and redness around the head of the penis and under the foreskin
1 related conditions
is not usually itchy
1 related conditions
is slow to learn to talk, or they’re not clear when they speak
1 related conditions
is usually around 15 cm (6 inches) across, but it can be smaller or much larger
1 related conditions
isn’t startled by loud noises
1 related conditions
itch or sore that won’t go away
1 related conditions
⚠️ Symptoms can be associated with many different conditions. This information is educational only and should not be used for self-diagnosis. Always consult a healthcare professional.