migraine. headache, pain, tend cooccur on one side of the headp

ache attack blood blur brain bright care cell central cerebellum cerebrum cluster concept cord cortex depression disease electrical eye focused ganglion head headache headaches health human illness illustration impulses inflamed infographic medical migraine myelin nausea nerve neutron occur pain people peptides person pressure receptor sick signal spinal squeezing stress stressed symptom symptoms tension tired trigeminal vessel visual