CLUSTER — 6 CAUSES
Neurological & Structural
Brain fog from neuroinflammation, blood flow issues, head injuries, and structural problems.
Causes in This Category
Neuroinflammation
Your immune system is attacking your brain. Microglia (brain immune cells) stay 'switched on' after infection, autoimmunity, or chronic stress, releasing inflammatory cytokines tha...
Pcs
Post-concussion syndrome — persistent cognitive symptoms after head injury. The brain injury may have been 'mild' but the fog is not. Symptoms include difficulty concentrating, mem...
Cervical
Craniocervical instability (CCI) is the hidden cause that nobody checks for because standard supine MRI misses it. When you lie down for the MRI, gravity reduces the instability — ...
Hypoperfusion
Your brain uses 20% of your blood supply. Reduced cerebral blood flow (from POTS, blood pressure issues, cervical spine problems, heart conditions, or deconditioning) directly caus...
Neurological Red Flags
NOT ALL BRAIN FOG IS BENIGN. This entry exists because some causes of cognitive decline require URGENT medical evaluation, not lifestyle optimization. Dementia (Alzheimer's, vascul...
Migraine
Migraine is a primary neurological disorder — NOT just a headache. Brain fog during migraine (pre-ictal, ictal, and post-ictal phases) is caused by cortical spreading depression: a...