Just as there are several different types of headaches, there is also a wide variety of causes for each type of headache. The causes of the three primary types of headaches are:

- Cluster headaches: the cause of cluster headaches is relatively unknown, as they are not associated with any known triggers, however alcohol use and certain medication may trigger cluster headaches.

- Migraine headaches: There are several known triggers of migraines including changes in sleep pattern, daily use of pain relief medication, dehydration, emotional stress, exposure to smoke or strong scents, excessive caffeine intake and more.

- Tension headaches: Some known triggers for tension headaches include anxiety, bright sunlight, certain smells, dehydration, fatigue, lack of exercise, missing meals, noise, poor posture, and stress.

Strep throat is a highly contagious bacterial infection.

It usually spreads through small respiratory droplets that become airborne when someone with strep throat sneezes or coughs.

Strep throat is more common in children than in adults. It most commonly occurs in children and adolescents between the ages of 5 and 15.

Because it's so contagious, strep throat can easily spread where children congregate, like in daycare centers and schools.

Adults who are frequently around children, like parents of school-aged children, may also be more susceptible to strep throat.

Strep throat is rare in toddlers under the age of 3 years.