The unnamed woman, 36, reportedly died in a residential area known as Entrenaranjos in Orihuela.
Medical responders spent 45 minutes trying to save her with CPR.
Tragically, she was pronounced dead at the scene at around 1.20pm on Friday local time, around an hour after the alarm was raised.
An autopsy is due in the coming hours, but local reports suggest the woman suffered from epilepsy.
Additional reporting by Natalia Penza.
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