It sounds like you may be experiencing a severe sinus headache due to frontal sinusitis, which can cause pressure, pain, and a feeling of fullness in the forehead. Rest, stay hydrated, and use steam inhalation to help clear the sinuses. Over-the-counter pain relievers may ease discomfort. If the headache is very severe or persistent, see a doctor promptly.

Headaches in the evening are often caused by fatigue, eye strain, dehydration, or prolonged periods without food. Try to take regular breaks from screens, drink enough water, and avoid skipping meals. Maintaining good posture and getting adequate sleep can also help reduce such headaches. You may use a simple pain relief medicine if needed, but not regularly. If the pattern continues or worsens, consult a doctor to rule out other causes.

Headaches are usually harmless, but sudden, severe, or progressively worsening headaches, especially with neurological symptoms, vision changes, fever, or neck stiffness, require urgent medical attention. Avoid self-medicating with strong painkillers without medical advice, as it may mask serious conditions.

For a continuous headache lasting 4 to 5 days, you can try over-the-counter pain relievers like Paracetamol (500mg) or Ibuprofen (400mg) taken with food. However, because this headache is persistent and covers your entire head, do not overuse these medications to avoid rebound headaches. I highly recommend consulting a doctor to find the root cause. Please seek immediate emergency medical care if you experience "red flag" symptoms such as a stiff neck, fever, confusion, vision changes, difficulty speaking, numbness, or if this is the most severe headache you have ever experienced.

Yes, your headaches worsening with exercise and lack of relief from painkillers strongly suggest Intracranial Hypertension (IH). Additionally, frequent use of Saridon and Combiflam can cause "medication overuse headaches," worsening your pain. The sleep jerks and nighttime panic could indicate sleep apnea, which is closely linked to IH. To confirm IH, you need an eye checkup to look for optic nerve swelling (papilledema) and a lumbar puncture to measure spinal fluid pressure. If confirmed, treatments include medications like Acetazolamide (Diamox) to reduce brain pressure, lifestyle/weight management, and tapering off daily painkillers. A sleep study is also recommended for your sleep symptoms. Please consult a neurologist.

Since you have had severe headaches for 8 years with anxiety and a feeling of pressure in the head, it is important to see a doctor or neurologist for a proper evaluation. Long-term headaches can have many causes, like migraine, tension, sinus issues, or other neurological conditions, and the right treatment depends on the cause. A doctor can recommend safe medications, lifestyle changes, and tests to find relief.