A middle ear infection puts pressure on the eardrum, causing pain and, sometimes, hearing loss.
Labyrinthitis, an infection and swelling in the inner ear, and may cause vertigo or hearing loss.
Medication side effects include nausea, vomiting, stomach upset, weakness, dizziness, seizures, and more.
Generalized anxiety disorder is a condition in which a person has nearly constant anxiety.
Dehydration, or not getting enough fluid, causes dry and sticky mouth, tearless crying, and more in children.
Before fainting, you might feel lightheaded, warm, nausea, a cold sweat, or have tunnel vision.
When someone has a panic attack, that person feels a sudden, intense fear that can't be controlled.
Diabetes can make you feel hungry, tired, or thirsty; you may urinate more than normal and have blurry vision.
Some heart rhythm disorders can cause a fluttering in the chest, shortness of breath, chest pain or dizziness.
Benign paroxysmal positional vertigo is usually a temporary condition that affects balance and causes vertigo.
Diabetes can make you feel hungry, tired, or thirsty; you may urinate more than normal and have blurry vision.
Atrial fibrillation is a heart condition that causes heart palpitations, confusion, dizziness and more.
Anemia , a lack of red blood cells, can cause fatigue, pale skin and gums, brittle nails, irritability, and more.
Hyperventilation is rapid or shallow breathing usually caused by stress or anxiety.
An insulin reaction is the result of low blood sugar and causes anxiety, hunger, shaking, dizziness, and more.
Supraventricular tachycardia is fast heart rhythm starting in one of the upper chambers of the heart.
Anemia, a lack of red blood cells, can cause fatigue, pale skin, weakness, dizziness, headache and more.
Anemia of chronic disease (ACD) can cause fatigue, pale skin, weakness, dizziness, headache and more.
Heat exhaustion causes intense thirst, heavy sweating, pale, cool, and moist skin, muscle cramps, and more.
High blood pressure, often asymptomatic, can cause headaches, shortness of breath, nosebleeds, and anxiety.
Meniere's disease is a chronic inner ear condition that causes vertigo or extreme dizziness, and more.
Pulmonary hypertension can cause shortness of breath, a fast heart rate, or lightheadedness.
Transient ischemic attacks cause headache, numbness, tingling, or weakness in the face, arm, or leg, and more.
Cryptococcosis is a lung disease causing a wide range of digestive, respiratory and cardiovascular symptoms.
Dehydration, or not getting enough fluid, causes low blood pressure, weakness, dizziness, fatigue, and nausea.
Aortic stenosis is a condition of the heart causing shortness of breath, dizziness, or chest pain.
Benzodiazepines are prescription medications that cause drowsiness, dizziness, blurred vision, and more.
Aspirin poisoning is a medical emergency and can cause nausea, vomiting, drowsiness and more.
Carbon monoxide poisoning can be fatal, symptoms include headache, dizziness, nausea, and vomiting.
Aortic regurgitation, when the aortic valve doesn't close completely, can cause severe heart symptoms.
A chemical burn can cause symptoms ranging from burning and blisters to pain and shortness of breath.
Small intestine cancer is rare and often has no symptoms, but can cause symptoms in its advanced stages.
The symptoms of cyanide poisoning include headache, weakness, confusion, nausea, and seizures.
Hemolytic anemia occurs when there aren't enough red blood cells in the blood.