Dislodged ear crystals, also known as otoconia, occur when tiny calcium carbonate crystals detach from the utricle and saccule (parts of the inner ear responsible for balance) and enter the semicircular canals.

These crystals, influenced by gravity, shift when a person changes position, causing abnormal fluid movement within the semicircular canals. The brain receives incorrect signals about motion, leading to a sensation that surroundings are spinning, especially when lying down, sitting up, turning over, or rotating the head. This mechanism is common in benign paroxysmal positional vertigo (BPPV), a form of peripheral vestibular disorder.

This mechanism does not directly depend on ambient temperature. Therefore, there is no evidence to conclude that cold weather directly worsens symptoms of dislodged ear crystals.

However, cold weather often alters daily habits. Individuals may curl up or toss and turn more during sleep. These head position changes can easily trigger dizziness episodes in those with dislodged ear crystals.

Weather changes can also disrupt sleep, lead to fatigue, reduced water intake, and increase susceptibility to colds or rhinitis. These conditions may cause lightheadedness, headaches, and dizziness, which can be confused with symptoms of dislodged ear crystals.

Doctor Phat examines a patient's vestibular function using the Interacoutics videonystagmography system. *Photo: Tam Anh General Hospital*

If dizziness is severe and does not improve, a medical examination is recommended. A doctor can assess vestibular function and evaluate the condition of dislodged ear crystals using an AI-powered videonystagmography system. Based on this, the doctor can perform crystal repositioning maneuvers and guide patients through home exercises. Additionally, individuals should change positions slowly, sit up gradually upon waking, and avoid working at heights or driving while experiencing dizziness.

Dr. Truong Tan Phat

Head of Ear, Nose, and Throat Department

Tam Anh General Clinic District 7