Some popular hormonal birth control implants, injections, and patches have been associated with increased pressure on the brain. This can cause symptoms that mimic a brain tumor when no tumor is present. Symptoms include blurred vision, double vision, severe headache, ringing in the ears, and dizziness. The condition is called pseudotumor cerebri (PTC) or intracranial hypertension (IIH). It must be diagnosed by a physician. It is usually a diagnosis of exclusion, meaning other causes must be ruled out (such as an actual brain tumor) by diagnostic testing. A lumbar puncture, also called a spinal tap, may temporarily relieve the symptoms.