The pineal gland lies deep within the brain and produces melatonin. This hormone affects the other glands in the endocrine system and mirrors the Crown Chakra's relationship with the other Chakra's. This gland and Chakra hold sway over the entire system.
POSSIBLE PHYSICAL AREAS AFFECTED BY AN OUT OF BALANCE CHAKRA: Exhaustion, Epilepsy, Cerebrum, Pineal Gland, Right Eye. Issues are - Spiritual Wisdom.
The Crown Chakra is associated with the central nervous system/Pineal gland. It is the centre of enlightenment, dynamic thought, truth and oneness. The Crown Chakra governs the top of the spinal cord, brain stem, pain centre and nerves. This Chakra is about wisdom and being one with the world. When this Chakra is open, you are unprejudiced and quite aware of the world and yourself. If it is under-active, you are not very aware spiritually. You are probably quite rigid in your thinking. If this Chakra is over-active, you are probably intellectualising things too much. You may be addicted to spirituality and probably ignoring your bodily needs. (Healing From The Heart)