Blocks that are common in this energy center would be: all fears of speaking, difficulty in expressing yourself, and / or talking too much, being blunt, opinionated, yelling, foul language, and the list goes on.... Illness that may present themselves would arise from the throat like excessive sore throats and colds, thyroid problems, tightness in this area, etc.
How to heal and bring balance into this center
* Be mindful of how you speak of others and how you speak of yourself. I believe this is a good place to begin... Think before you speak, and pay close attention to the Tone of your voice. In my own experiences, I have found that I could change a bad situation into a better one by simply maintaining a smooth and collected voice. I also found that when you smile while you're talking, the voice sounds upbeat.
* A Simple Meditation to balance the Throat Chakra:
Find a comfortable seated position, close your eyes and focus on your breath. Call your Angels, Guides, or God to help you with this healing. I like to practice a Pranayama ( Sanskrit for Breath Control, or controlling the breath) called Sama Vritti ( means Equal Breath ). Begin by finding a comfortable breathing count like 4 or 6. For ex. You Inhale for 4 or 6 counts & Exhale 4 or 6 counts, continue breathing like this for the next few minutes. Once you feel centered and grounded envision a blue ball of energy within the throat area, start to visualize it rotating in a clockwise position... Now as you inhale think of bringing the color blue to your throat area and Exhale the color black. This can be done in many ways, but I'm keeping it Simple = ), this can also be done to all the chakra's using their corresponding color.