![]() Zig-zag patterns or dark spots in your vision.Psychedelic colours, distorted colours and shapes, or kaleidoscope vision.Patches of shimmering light or flashing lights.This visual disturbance can occur with or without flashes of light. Black spots, threads, wiggly lines that float across your vision.This term is most commonly used when describing the visual symptoms seen with migraines. Certain foods such as red wine, chocolate, caffeine or aged cheeseįor many sufferers, no trigger can be found.Ī visual disturbance is how we describe a change to your vision that is not normal.Hormone changes during the menstrual cycle, pregnancy, menopause or puberty.Bright lights, loud noises, or strong odours.Sometimes a person needs to have a combination of triggers to occur before they get a migraine. A trigger is an action or event that tends to lead to the migraine starting. Most migraine sufferers learn what their triggers are. ![]() With changes like this happening to the vessels inside our heads, it isn’t all that surprising that people often describe the pain as throbbing or as a feeling of pressure inside their head. Force the blood to travel through much smaller than normal spaces, making the pulsation of the blood more prominent.Push on neighbouring nerves – causing the sensation of pain.This system controls the brain’s blood vessels, causing them to swell. Serotonin then stimulates the trigeminovascular system. ![]() This stimulation affects the production of serotonin and other brain chemicals. This is a process that happens in the brain, more specifically the cortex, when these brain cells are over stimulated. Research is still ongoing, but migraines are thought to likely be caused by a phenomenon called cortical spreading depression (CSD). Other auras can be olfactory (the smell of smoke or rotting food), auditory (ringing in the ears) or physical like the feeling of a breeze, numbness, weakness or difficulty speaking. Often described as psychedelic in appearance. In a migraine, the most common auras are visual flashing lights, zig zag patterns, blurred vision or patches of shimmering light. It can also occur before other brain conditions too, like seizures.
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