Headaches are common in our daily life. Usually they are not serious and occur from stress, sinus, and tension. The problem arises when you have to differentiate between dangerous and non-dangerous headaches which are rare, but require immediate attention. Before you ignore a serious, urgent headache you should know when to see a doctor.

Here are some which require your attention:

• Thunderclap headache

This type of severe headache that occurs frequently, it develops within 60 seconds and has severe pain. Causes of a thunderclap headache can be bleeding in the brain after an injury, stroke, or aneurysm.

• Headache after injury

If you have experienced a head injury your headache requires special attention. A headache after an injury may indicate concussion and requires immediate medical treatment. Even a fairly minor injury to the head can cause an invisible bleed, causing pressure in the skull.

• Headache that is worse upon waking

A headache that’s worse in the morning and causes vomiting is a dangerous headache. As the day progresses it gradually improves but worsens with exercise, coughing, or bending and does not improve with regular headache medicines. Beware! This can be a sign of brain tumor. Per Casilda Balmaceda, M.D., an Assistant Professor of Neurology at Columbia University College of Physicians and Surgeons in New York City, only 8% of those with brain tumors have headaches as the first and only symptom.