She suffers from high blood pressure and dizzy spells (=short periods when you feel dizzy).
1 having a feeling of not being able to balance, especially after spinning around or because you feel sick: I’d better sit down – I feel dizzy. She suffers from high blood pressure and dizzy spells (=short periods when you feel dizzy).2confused or excited: dizzy from/with We were all dizzy with excitement.3informal silly or stupidSYN ditzy: a dizzy blonde4dizzying [Origin: Old English dysig stupid]—dizzily adverb—dizziness noun [uncountable]