Why does the brain always think about things before going to sleep?

Thinking excessively before sleep may be related to factors such as high mental stress, neurasthenia, and anxiety disorder. Detailed analysis is as follows:

1. High Mental Stress

If mental stress has been excessive recently, it may lead to dysfunction of the brain. The cerebral cortex can affect human thought processes and sensory perception, resulting in symptoms such as difficulty falling asleep and racing thoughts. In such cases, patients can relieve their condition and improve discomfort by listening to soothing music, reducing workload, and other relaxation methods.

2. Neurasthenia

The exact cause of neurasthenia remains unclear, but it is generally believed to be associated with psychological factors and excessive mental work. Clinically, symptoms such as intrusive thoughts, irritability, and insomnia may occur. Patients may take medications such as fluoxetine hydrochloride enteric-coated tablets or sertraline hydrochloride tablets under a doctor's guidance.

3. Anxiety Disorder

The cause of anxiety disorder is relatively complex and not yet fully understood, possibly involving genetic and neurochemical factors. Clinical manifestations include tension, restlessness, and persistent unwanted thoughts. Patients may use medications such as lorazepam tablets or alprazolam tablets under medical supervision.

In addition to the above factors, this condition may also be associated with autonomic nervous system dysfunction, depression, obsessive-compulsive disorder, and other conditions. It is important to seek timely medical evaluation and follow professional medical advice for proper diagnosis and treatment.