Total 24 clinical symptoms reported for Klippel-Feil syndrome 
Abnormal vertebral segmentation and fusion This section is currently in development.
 
Very frequent
Abnormality of the vertebral column Any abnormality of the vertebral column.
 
Synonyms:Abnormal spine; Abnormal vertebral column; Abnormality of the spine; Abnormality of the vertebral column
Very frequent
Cervical C2/C3 vertebral fusion Fusion of cervical vertebrae at C2 and C3, caused by a failure in the normal segmentation or division of the cervical vertebrae during the early weeks of fetal development, leading to a short neck with a low hairline at the back of the head, and restricted mobility of the upper spine.
 
Synonyms:Fusion of cervical vertebrae c2-3; Klippel-Feil anomaly; Klippel-Feil syndrome
Very frequent
Facial asymmetry An abnormal difference between the left and right sides of the face.
 
Synonyms:Asymmetric facies; Asymmetry of face; Asymmetry of right and left side of face; Crooked face; Facial asymmetry; Unsymmetrical face
Very frequent
Low posterior hairline Hair on the neck extends more inferiorly than usual.
 
Synonyms:Low hairline at back of neck; Low posterior hair line
Very frequent
Short neck Diminished length of the neck.
 
Synonyms:Cervical shortening; Decreased cervical height; Decreased cervical length; Decreased length of neck; Short neck
Very frequent
Webbed neck Pterygium colli is a congenital skin fold that runs along the sides of the neck down to the shoulders. It involves an ectopic fibrotic facial band superficial to the trapezius muscle. Excess hair-bearing skin is also present and extends down the cervical region well beyond the normal hairline.
 
Synonyms:Neck webbing; Pterygium colli; Webbed neck
Very frequent