Causes of Headaches
Causes of Subacute HeadachesMany different things also can cause subacute headaches, which occur over a period of weeks to months. These headaches may signify something serious, especially if the pain worsens over the months or if it occurs in the elderly.
Some possible causes include:
- Temporal arteritis (also known as giant cell arteritis)
- A brain tumor
- A brain abscess, which is a pocket of pus inside the brain
- Bleeding inside of the brain, such as with a subdural hematoma
- Trigeminal neuralgia
- Glossopharyngeal neuralgia
- Postherpetic neuralgia
- High blood pressure (hypertension)
- Pseudotumor cerebri, a condition in which pressure builds up inside of the brain because of an increase in fluid
- Certain medical conditions, such as inflammatory bowel disease (Crohn's disease or ulcerative colitis), systemic lupus erythematosus, or HIV/AIDS.