Related Experiment Video
Updated: Aug 30, 2026
Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Acute adduction deficit in a 7-week-old infant
Sunila Jain1, David Goulstine, Irene Gottlob
1Department of Ophthalmology, Leicester Royal Infirmary and Leicester Warwick Medical School, Leicester, UK. suniljain@hotmail.com
Insights
This study reports the youngest infant diagnosed with infectious orbital myositis and postseptal cellulitis. High-dose antibiotics alone successfully treated the condition, highlighting their crucial role.
Area of Science:
- Ophthalmology
- Pediatric Infectious Diseases
- Medical Imaging
Background:
- Orbital infections in infants are rare and can present with varied symptoms.
- Differential diagnoses for proptosis and adduction deficit in infants include malignancy and inflammatory conditions.
- Early and accurate diagnosis is critical for appropriate management and preventing vision loss.
Observation:
- A 7-week-old infant presented with acute onset proptosis and medial rectus muscle restriction.
- CT imaging showed a postseptal cellulitis pattern with medial rectus muscle thickening.
- The infant had no response to initial conservative management, prompting further investigation.
Findings:
- Infectious orbital myositis and postseptal cellulitis were diagnosed.
- The infant showed complete resolution of symptoms after a course of high-dose intravenous antibiotics.
- Steroids and biopsy were withheld due to the favorable response to antibiotics alone.
Implications:
- This case represents the youngest documented patient with infectious orbital myositis and postseptal cellulitis.
- The findings underscore the importance of aggressive antibiotic therapy in managing pediatric orbital infections.
- Prompt and adequate antibiotic treatment can obviate the need for more invasive procedures like biopsy.
Abstract:
A 7-week-old infant with sudden onset adduction deficit and proptosis is reported. The main differential diagnoses included orbital myositis, orbital cellulitis, capillary haemangioma and rhabdomyosarcoma. A CT scan revealed a postseptal cellulitis-like picture with thickening of the medial rectus muscle. He was given a course of antibiotics, withholding steroids and biopsy. His condition resolved completely on high-dose antibiotics alone. To our knowledge this is the youngest patient with infectious orbital myositis and postseptal cellulitis described in the literature. The clinical course emphasizes the importance of administering sufficiently high doses of antibiotics.
