I'm sorry to hear you're experiencing sudden, intense headaches with tearing in your eye. These symptoms could suggest a type of headache that may require careful evaluation, such as cluster headaches or other neurological conditions.

Here are some important steps you can take:

• Keep a symptom diary: Note when the headaches occur, their duration, intensity, and any accompanying symptoms.
• Avoid known triggers: If you notice certain activities, foods, or environmental factors worsen your headaches, try to avoid them.
• Seek medical evaluation: It is important to consult a neurologist or headache specialist who can perform a thorough assessment, possibly including imaging or other tests, to determine the cause and recommend appropriate treatment.
• Medication caution: Some medications like Xenadom 500 (a combination of Naproxen and Domperidone) are used for migraine pain relief, but you should only take such medications under a doctor's guidance, especially since your symptoms may differ from typical migraines.

If your headaches worsen, become more frequent, or are accompanied by other symptoms like vision changes, weakness, or confusion, seek emergency medical care immediately.

Please consult a neurologist for a detailed evaluation and personalized treatment plan.To narrow down potential causes, we will need some more information.I understand you're experiencing sudden, intense headaches on the left side, with tearing in your left eye. To provide the best advice, could you please tell me your age and gender?