I'm always on the lookout for this. When I have an in-person doctor visit, I ask if they hear the "crackling" sound on the left side of my neck. I'm always on the lookout because my mother (during her 90-year life) had EVERYTHING. In her mid-30's she was diagnosed with cancer. Next she developed seizures, then strokes and heart condition. I remember when she had the accumulated fat removed from her carotid artery. Don't know if it was true, but she said it was blocked with solid white fat. Her life-long diet was Southern deep-fried with potatoes and milk gravy, cornbread and black-eyed peas.

I'd also be interested in your symptoms.