What are the symptoms of third cranial nerve palsy (oculomotor cranial nerve palsy) due to lesions in the orbit?

Updated: Oct 08, 2018
  • Author: James Goodwin, MD; Chief Editor: Andrew G Lee, MD  more...
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Answer

Lesions (eg, inflammatory, infectious, infiltrative, neoplastic, vascular, among others) in the orbit tend to produce associated proptosis, lid swelling, conjunctival injection, and chemosis.

There also may be involvement of the other cranial nerves that innervate extraocular muscles (fourth and sixth) or involvement of the muscles themselves.

Nonspecific idiopathic inflammation in the orbit is referred to as idiopathic orbital inflammatory syndrome (ie, orbital pseudotumor). Granulomatous and nongranulomatous lesions may also produce orbital involvement of the third cranial nerve.


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