Trigeminal trophic syndrome is a rare disease caused by the interruption of peripheral or central sensory pathways of the
trigeminal nerve. A slowly enlarging, uninflammed ulcer can occur in the area that has had trigeminal nerve damage; including but not limited to the cheek beside the
ala nasi
The human nose is the most protruding part of the face. It bears the nostrils and is the first organ of the respiratory system. It is also the principal organ in the olfactory system. The shape of the nose is determined by the nasal bones a ...
.
These sores affect the skin supplied by the sensory component of the trigeminal nerve. Similar lesions may also occur in the corners of the eyes, inside the ear canal, on the scalp or inside the mouth.
It has been stated that the ulceration is due to the constant "picking" of the patient. While this does occur, the picking behavior is an incomplete explanation of the disease presentation: the lack of feeling or pain allows the patient to continue scratching or picking the area, and, although there is no feeling, there is constant
neuropathic pain.
Sixty cases were reported from 1982 to 2002.
See also
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Trigeminal neuralgia (Tic douloureux)
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Skin lesion
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List of cutaneous conditions
Many skin conditions affect the human integumentary system—the organ system covering the entire surface of the body and composed of skin, hair, nails, and related muscle and glands. The major function of this system is as a barrier against t ...
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Somatosensory system
References
Neurocutaneous conditions
Syndromes
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