10 Signs You Could Have Allergies

2. Irritability and Depression

Multiple studies have found a connection between mood swings and allergens. For those who suffer from allergies, you may not be sleeping well. In turn, many become irritable. It's now believed that depressive symptoms may be triggered by inflammation in the body.

As cytokines are released, it's said that serotonin decreases, which is our 'feel-good' hormone. When it comes to allergies, they do not necessarily cause depression, but they can encourage depressive symptoms. Allergies that have been linked to mood changes are generally due to symptoms such as feeling low, fatigued, and lethargic.

1. Headaches

It's been reported that up to 15 percent of Americans who suffer from allergies also develop headaches as a common symptom. In most cases, these headaches are triggered by swelling. When the nasal passages become obstructed, this can increase skull pressure, leading to headaches.

You may experience increased pressure in your forehead, behind your eyes, along your cheeks, or even within your teeth. In more severe cases, individuals suffer from allergy-related migraines. Researchers believe this may be due to swelling of blood vessels in your head.