Serious and urgent causes of headaches include infection, bleeding, clots and tumours.
Sudden onset of the worst headache that worsens with exercise or sexual intercourse is an emergency.
Three specific situations are also urgent: pregnant or recently pregnant women who develop a sudden severe headache.
People who are immunocompromised should consider headache as an emergency.
People who've had any COVID-19 vaccine in the previous four to 42 ...
Serious and urgent causes of headaches include infection, bleeding, clots and tumours.
Sudden onset of the worst headache that worsens with exercise or sexual intercourse is an emergency.
Three specific situations are also urgent: pregnant or recently pregnant women who develop a sudden severe headache.
People who are immunocompromised should consider headache as an emergency.
People who've had any COVID-19 vaccine in the previous four to 42 ...