Headache that will not go away, blurred viaion, stutterring, involuntary spasms.pain will not go away with otc or prescription hydrocodone. what could this be?

See a doctor ASAP: Although your headache might represent a prolonged migraine, the other symptoms are not the usual accompaniments, and could represent an intracranial process. Do not use narcotics for headaches, as things usually get far worse. Get to your doctor and get this diagnosed and under control.

Issues here are...: ...Drugs that, in excess, can cause the symptoms you describe as well as medical conditions that may also be the cause of these same symptoms. The constellation of symptoms: ha, blurred vision, spasms and garbled speech are very concerning and deserve an immediate evaluation. Several serious neurological conditions need to be "ruled out.".

Headaches: Headaches could be coming from tension, eye strain, tooth grinding, dehydration, lack of sleep/poor sleep, skipping meals, stress, sleep apnea/snoring, or chronic sinus problems.