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The sensation of pain has been described by patients as "burning eyes", "terrible, unrelenting pain", a feeling of "a knife in my eye" or "paper cuts". [5] The pain is usually described as being located in and around the eye, but can progress to the surrounding areas of the face and head. A signature characteristic of ocular neuropathic pain is ...
The typical form results in episodes of severe, sudden, shock-like pain in one side of the face that lasts for seconds to a few minutes. [1] Groups of these episodes can occur over a few hours. [1] The atypical form results in a constant burning pain that is less severe. [1] Episodes may be triggered by any touch to the face. [1]
Trochleitis is inflammation of the superior oblique tendon trochlea apparatus characterized by localized swelling, tenderness, and severe pain. This condition is an uncommon but treatable cause of periorbital pain. The trochlea is a ring-like apparatus of cartilage through which passes the tendon of the superior oblique muscle.
Other symptoms include headache, fatigue, aching in the teeth, pressure or pain in the ears, and mucus dripping down the back of the throat (or postnasal drainage), per the Mayo Clinic.
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The principal nucleus contains a touch-position sensory map of the face and mouth, just as the spinal trigeminal nucleus contains a complete pain-temperature map. This nucleus is analogous to the dorsal column nuclei (the gracile and cuneate nuclei) of the spinal cord, which contain a touch-position map of the rest of the body.
Cluster headache is a neurological disorder characterized by recurrent severe headaches on one side of the head, typically around the eye(s). [1] There is often accompanying eye watering, nasal congestion, or swelling around the eye on the affected side. [1] These symptoms typically last 15 minutes to 3 hours. [2]
To summarize, the actions of the superior oblique muscle are (1) depression of the eyeball, especially when the eye is adducted; and (2) intorsion of the eyeball, especially when the eye is abducted. The clinical consequences of weakness in the superior oblique (caused, for example, by fourth nerve palsies) are discussed below.