Neuroinflammation is increasingly recognized as a key factor in the development and progression of a variety of brain disorders. Chronic neuroinflammation contributes to the breakdown of the blood-brain barrier and the accumulation of toxic proteins, leading to neuronal injury and loss. In the context of neuroinflammation and brain disorders, conditions such as Alzheimer's, Parkinson's, and autoimmune diseases like multiple sclerosis are significantly impacted by this inflammatory response. While initially protective, neuroinflammation can become maladaptive, further promoting brain damage. Advances in research are revealing the role of immune cells, such as microglia and T-cells, in driving neuroinflammation and how this process is directly linked to the progression of neuroinflammation and brain disorders. New therapies targeting neuroinflammatory pathways, including anti-inflammatory cytokines and microglial inhibitors, offer potential treatments to mitigate these effects and slow the progression of brain disorders.