Treatment of mood and/or anxiety disorders by electrical brain stimulation and/or drug infusion

A method of treating a patient with an anxiety disorder and/or a mood disorder characterized by elevated mood, comprising:

• implanting at least one system control unit in the patient, wherein the at least one unit controls the delivery of at least one stimulus to at least one area of the brain affecting an anxiety disorder and/or a mood disorder characterized by elevated mood;
• applying the at least one stimulus to the at least one area of the brain in order to at least in part alleviate symptoms of the anxiety and/or mood disorder of the patient being treated, wherein the at least one stimulus decreases excitement of the at least one area of the brain affecting the anxiety and/or mood disorder that exhibits chronic increased activity;
• and wherein the at least one stimulus is applied to one or more of the hippocampus, insula, right middle temporal gyrus, occipital cortex, temporal cortex, hypothalamus, anterior pituitary, posterior pituitary, and right posterior temporal lobe;
• sensing at least one condition, wherein the at least one sensed condition is one or more of:
• serotonin level, a neurotransmitter breakdown product level, change in a neurotransmitter breakdown product level, a medication level, change in a medication level, a drug level, change in a drug level, and change in level of a bloodborne substance;
• and
• using the at least one sensed condition to automatically determining the stimulus to apply.