Chronic Tension Type Headache
Chronic tension type headache is classified as headache pain being bilaterally on both sides of the head, where the pain is usually symmetrical and equal from left to right.
Compared to migraines, chronic tension type headache causes mild to moderate pain, and feels more of a tightening and pressing sensation rather than a pulsating pain.
New Daily Persistent Headache
New daily persistent headaches occur in those with no history of headaches and come on abruptly and suddenly. The pain is constant in nature within the first three days from the start of the first headache.
New daily persistent headaches normally presents with pain bilaterally to both sides of the head with a mild to moderate pain intensity, similar to chronic daily tension headache. The pain is a pressing type pain with a tightening sensation as opposed to pulsating pain.
Chronic migraine is categorised as those who suffer from a history of episodic migraines. Usually, their migraines have worsened over time and have now become chronic in nature due to being left untreated.
The pain can switch from left to right during the same attack or during but is usually unilaterally on one side of the head. The pain is usually felt as pulsating and throbbing sensation and is usually moderate to severe in severity.
Hemicrania continua is a more severe headache that affects locked on one side of the head and does not shift from side to side.
This headache is persistent with no pain-free periods and is usually moderate in nature. However, tends to have severe spikes of pain throughout the day.
Hemicrania continua is also associated with autonomic features such as a watery eye, redness in the eye, swollen or droopy eyelids, blocked or runny nose.
Symptoms such as sensitivity to sound, smell or light, nausea and vomiting can also be present.