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Blepharospasm is often associated with dry eyes, but the causal mechanism is still not clear. [16] [8] Research in New York and Italy suggests that increased blinking (which may be triggered by dry eyes) leads to blepharospasm. [24] [25] A case control study in China found that blepharospasm aggravated dry eyes. [26]
Spasm means "uncontrolled muscle contraction". The term blepharospasm ['blef-a-ro-spaz-m] can be applied to any abnormal blinking or eyelid tic or twitch resulting from any cause, ranging from dry eyes to Tourette's syndrome to tardive dyskinesia. The blepharospasm referred to here is officially called benign essential blepharospasm (BEB) to ...
An increase in neurotransmitters causes spasms to occur in the neck, resulting in spasmodic torticollis. [6] Studies of local field potentials have also shown an increase of 4–10 Hz oscillatory activity in the globus pallidus internus during myoclonic episodes and an increase of 5–7 Hz activity in dystonic muscles when compared to other ...
But those first migraine warning signs can be subtle and unexpected, including symptoms like difficulty concentrating, sleep disturbances, food cravings, neck pain and yawning.
Torticollis, also known as wry neck, is a painful, dystonic condition defined by an abnormal, asymmetrical head or neck position, which may be due to a variety of causes. The term torticollis is derived from Latin tortus 'twisted' and collum 'neck'.
Acute dystonic reactions: painful, muscular spasms of neck, jaw, back, extremities, eyes, throat, and tongue; highest risk in young men. [2] [10] Oculogyric crisis is a kind of acute dystonic reaction that involves the prolonged involuntary upward deviation of the eyes.
Cervical dystonia (CD) or spasmodic torticollis is characterized by muscle spasms of the head and neck, which may be painful and cause the neck to twist into unusual positions or postures. [7] Writer's cramp and musician's cramp is a task-specific dystonia, meaning that it only occurs when performing certain tasks. Writer's cramp is a ...
A neck spasm is an involuntary contraction of the muscles in the neck region. [1] Causes of neck spasm. The possible causes of neck spasms include: [citation needed]