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171 possible causes of "Headache"
  • Unequal pupils
  • Color blindness
  • Protruding eyes
  • Nausea
  • Headache
  • Pain
21. Glaucoma
Glaucoma is not a singular eye disease, but is instead a term for several eye conditions that can damage your optic nerve. The optic nerve is the nerve that supplies visual information to your brain from your eyes...
  • Nosebleed
  • Wheezing
  • Eye swelling
  • Headache
  • Sinusitis
  • High-pitched breath sounds
22. Allergic Rhinitis
Allergic rhinitis, also called hay fever, is the group of uncomfortable symptoms that occur when your body is exposed to a specific allergen. An allergen is a typically harmless substance, such as grass or dust, whic...
  • Sleeplessness
  • Anxiety
  • Low back pain
  • Dizziness
  • Headache
  • Shoulder pain
23. Whiplash
Whiplash occurs when a person's neck is whipped backward and then forward very suddenly. This injury is most common following a rear-end car collision. It can also result from physical abuse, sports injuries, o...
  • Depression
  • Depressed mood
  • Earache
  • Headache
  • Jaw pain
  • Clenching teeth
24. Teeth Grinding
Bruxism is the medical term for clenching your jaw or grinding your teeth. It's a very common condition, and many people grind their teeth without realizing it, especially if it occurs during the nighttime. Whil...
  • Diarrhea
  • Vomiting
  • Nausea
  • Shortness of breath
  • Headache
  • Loss of appetite
25. Swine Flu
Swine flu, also known as the H1N1 virus, made headlines in 2009 when it was declared a pandemic (Dandagi & Byahatti, 2011). Pandemics are contagious diseases affecting people throughout the world or on multipl...
  • Blurred vision
  • Vertigo
  • Unable to speak
  • Clumsiness
  • Headache
  • High blood pressure
26. Mini Stroke (Transient Ischemic Attack)
During a transient ischemic attack (TIA), also known as a mini stroke, blood stops flowing to the brain for a short period of time. However, a mini stroke doesn't kill brain cells like a stroke does. A mini strok...
This condition is considered a medical emergency. Urgent care may be required.
  • Choking
  • Coughing up phlegm
  • Pain
  • Headache
  • Irritation of nose
  • Mouth irritation
27. Allergies Overview
An allergy is the immune system's response to a foreign substance that is not typically harmful to your body. These foreign substances-such as certain foods, pollen, or pet dander-are called allergens. They elicit ...
This condition is considered a medical emergency. Urgent care may be required.
  • Unequal pupils
  • Loss of appetite
  • Slow movements
  • Alteration in consciousness
  • Headache
  • Toe numbness
28. Brain Aneurysm
An aneurysm in the brain is a weak area in an artery in the brain that bulges out and fills with blood. It may also be called an intracranial (skull) aneurysm or a cerebral (brain) aneurysm. A brain aneurysm is ...
This condition is considered a medical emergency. Urgent care may be required.
  • Discharge from nose
  • Headache
  • Feels hot to touch
  • Fever
  • Runny nose
  • Itchy ear
29. Rhinitis
Rhinitis is inflammation of the nasal cavity lining (inside the nose). It is often caused by allergies. It may also be caused by environmental factors such as pollution, weather changes, stress, infections, and som...
  • Chronic pain
  • Temporomandibular joint locking
  • Teeth grinding
  • Headache
  • Ringing in ears
  • Oversensitive hearing
30. TMJ (Temporomandibular Joint) Disorders
The temporomandibular joint (TMJ) is the joint that connects your mandible (lower jaw) to your skull. The joint can be found on both sides of your head in front of your ears. It allows your jaw to move, enabling you t...

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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