1 Other symptoms may accompany the rash, such as joint pain, fever, chills, or fatigue. 2  If Lyme disease is not treated, more severe symptoms and complications can occur. 3  These include arthritis, neurologic symptoms, or heart problems.ymptoms. 1  A bull's-eye rash (erythema migrans) is the most definitive sign of Lyme disease infection. 2  Other symptoms may accompany the rash, such as joint pain, fever, chills, or fatigue. 3  If Lyme disease is not treated, more severe symptoms and complications can occur.
Dopamine production. Dopamine is produced in several areas of the brain, including the substantia nigra and the ventral tegmental area. It is a neurohormone that is released by the hypothalamus.
Dopamine. Dopamine can act as both an excitatory or inhibitory neurotransmitter and functions as the brainâs âfeel goodâ neurotransmitter. It is part of the brainâs reward system and creates feelings of satisfaction or pleasure when we do things we enjoy, such as eating or having sex.