A severe headache with fever and cold symptoms suggests an infection that may need medical evaluation. You can take a fever-reducing and pain-relieving medicine like Calpol 650 mg (paracetamol) as per the recommended dose to help ease your symptoms.

🩺 Immediate Steps to Take

• Rest well and stay hydrated with warm fluids like herbal teas or soups.
• Use Calpol 650 mg tablet to reduce fever and headache, following the dosage instructions on the package or as advised by a doctor.
• Avoid alcohol and monitor for any worsening symptoms.

⚠️ When to Seek Urgent Care

• If the headache worsens suddenly or is accompanied by neck stiffness, confusion, or difficulty breathing.
• If fever persists beyond 3 days or is very high (above 39°C/102°F).
• If you develop rash, persistent vomiting, or severe weakness.

🩺 Follow-up Advice

If symptoms do not improve or worsen, please consult a general physician or an infectious disease specialist promptly for further evaluation and treatment.

If you want, I can explain more about managing fever and headache safely at home.To narrow down potential causes, we will need some more information.Please tell me your age and gender. I understand you have a severe headache along with fever and a cold.