Dr. Chad on Instagram: "Pseudobulbar Affect (PBA) is a neurological condition that causes sudden, uncontrollable episodes of laughing or crying that are completely out of proportion—or unrelated—to how someone actually feels. 😢😂 It occurs when the brain circuits that regulate emotional expression are damaged, usually from conditions like stroke, traumatic brain injury, multiple sclerosis, ALS, or dementia. The result is a disconnect between what a person feels internally and how their emotions