The fifth chakra is located in the throat, and is called Vishuddha chakra. It is associated with the ether, the color blue, and helps with self-expression, speaking your truth, identifying with others, purification, and self-fulfillment.
When this chakra is balanced, one might find a clear voice, healthy thyroid & thymus, good hearing, a clear throat and sinuses, good sleep and dreaming, Also one might find the ability to transform negative experiences into wisdom and learning, ethical sense and ability to exert ethical choice, ability to speak up and/or listen as necessary, and honesty.
If it is imbalanced one might see thyroid imbalance, nose and throat issues, tooth decay, insomnia, weight problems, ear infection, and neck pain. Emotionally, one might experience emotional insecurity, fear of others' opinions, inability to speak up or listen.
When this chakra is imbalanced one might try a pranayama technique of alternate nostril breathing to restore balance. One might also meditate on the mandala seen here. Chanting the word "ham" might help as well. It is said more like "hom". Physically, one might try the neti pot, gargle salt water, ear candling, singing, humming and neck rolls. For the asana that one might try to balance this chakra, try shoulderstand, fish, plow, or camel.