Understand your symptoms
Plain-language guides to what a symptom can mean, what usually helps, and when to see a doctor.
Popular Conditions
Overviews of common long-term conditions: symptoms, causes, treatment options and prevention.
Diabetes
Long-term high blood sugar. Early signs, type 1 vs type 2, and how it is managed.
High Blood Pressure
Usually silent. What the numbers mean, risks, and lifestyle and medical treatment.
Asthma
Inflamed, narrowed airways causing wheeze and breathlessness. Triggers and inhaler basics.
Arthritis
Joint pain and stiffness. Osteoarthritis vs inflammatory arthritis and what helps.
Anxiety
Persistent worry that interferes with daily life. Physical symptoms and effective treatments.
Migraine
Throbbing headaches with nausea or light sensitivity. Triggers, relief and prevention.
Common Symptoms
Start with what you are feeling. Each guide lists likely causes and the warning signs that need prompt care.
Headache
Tension, migraine, sinus and red-flag headaches
Fatigue
Why you feel tired all the time
Fever
When a high temperature needs care
Cough
Dry, wet and lingering coughs
Chest Pain
Heart, lung and muscle causes
Nausea
Common causes and quick relief
Shortness of Breath
Breathlessness: when it is urgent
Dizziness
Lightheadedness vs vertigo
Most-Searched Symptoms
The symptoms our readers look up most often, with clear explanations of causes, relief, and when to see a doctor.
Coryza (Runny Nose)
Causes, mucus colors & relief
Side Pain
Left or right flank pain causes
Suprapubic Pain
Lower-central pain over the bladder
Arm Lump or Mass
What a lump on the arm can mean
Leg Lump or Mass
Causes of a lump in the leg
Wrist Swelling
Why a wrist swells & how to treat it
Excessive Tearing
Why your eyes water (lacrimation)
Mouth Pain
Dental and oral causes of pain
Feeling Hot
Causes without a fever
Night Sweats
Causes & when to worry
Tongue Lesions
Spots, bumps & sores on the tongue
Frontal Headache
Forehead pain causes & relief
What You'll Find on iSymptom
Plain-language guides
Clear explanations of symptoms and conditions written for a general audience.
Structured by topic
Each guide covers overview, causes, common treatments, prevention, and when to see a doctor.
Connected topics
Related symptoms and conditions are cross-linked so you can explore connected topics.