Does Low Dose Naltrexone (LDN) cause an increase or decrease in cranial pressure?

Does Low Dose Naltrexone (LDN) cause an increase or decrease in cranial pressure?

As someone that works with primary and metastatic brain cancer, I have found LDN VERY helpful in overcoming intracranial pressure/edema as it directly lowers inflammation in the brain, so in my personal experience, I would say it decreases intracranial pressure.