retrocollis

retrocollis

 [ret″ro-kol´is]
spasmodic torticollis in which the head is drawn back.

ret·ro·col·lic spasm

(ret'rō-kol'ik spazm)
Torticollis in which the spasm affects the posterior neck muscles.
Synonym(s): retrocollis.

retrocollis

(re?trö-kol'is) [ retro- + collum]
Torticollis with spasms affecting the posterior neck muscles.
Synonym: retrocollic spasm
References in periodicals archive ?
Clinical signs of CWD in hamsters began with lethargy and, upon arousal, retrocollis; as the disease progressed, lethargy declined with increased dystonic movement including ataxia and tremors.
have described two patients with tremor and dystonia caused by AVM in the contralateral basal ganglia, thalamus and mesencephalon, one patient with torticollis and AVM in the posterior thalamus, and another one with retrocollis and AVM in the parietal lobe.
These movements, which are confused with dystonia, include retrocollis, opistotonic posture, and slanting of the head on one side (25).
Cervical dystonia causes rotation of the head (torticollis), tilting of the head (laterocollis), flexion of the neck (anterocollis), and extension of the neck (retrocollis).
They were categorized as torticollis, laterocollis, anterocollis, retrocollis, and combined form according to their clinical manifestation.
Pure torticollis was determined in 34 (59.64%), pure laterocollis was determined in 5 (8.78%), pure anterocollis was determined in 1 (1.75%), and the combined form was determined in 17 (29.83%, of the 17 patients with combined form, 11 had torticollis in addition to retrocollis, 4 had torticollis in addition to anterocollis, and 2 had multiple-sided rotation) of the patients.
Age Sex onset (years) Tremor distortion 1 61 F 10 Torticollis 2 35 M 7 Yes Torticollis 3 65 F 15 Laterocollis 4 63 F 9 Torticollis 5 73 F 32 Laterocollis 6 71 M 27 Laterocollis 7 63 M 38 Yes Torticollis 8 51 F 4 Yes Torticollis 9 54 F 7 Yes Laterocollis 10 23 M 6 Torticollis 11 38 F 12 Yes Torticollis 12 45 M 15 Retrocollis 13 60 M 27 Laterocollis 14 48 M 22 Torticollis 15 49 M 13 Torticollis 16 33 M 18 Yes Laterocollis 17 59 F 13 Laterocollis 18 59 M 16 Torticollis 19 62 F 13 Torticollis 20 41 F 7 Yes Torticollis 21 49 M 11 Yes Laterocollis 22 50 M 8 Torticollis 23 58 M 6 Laterocollis 24 60 F 12 Yes Torticollis 25 32 F 12 Yes Torticollis 26 66 M 6 Laterocollis 27 21 F 3 Yes Torticollis 28 68 F 4 Torticollis 29 62 F 13 Yes Torticollis 30 41 F 4 Laterocollis No.
Any of the 52 muscles in the neck can be involved in combination to produce involuntary movements in a sustained or spasmodic nature in a combination of anterocollis, laterocollis, rotational torticollis or retrocollis. A neck tremor is very common with dystonia and, as a result, is commonly misdiagnosed even by neurologists as an essential tremor.
Immediate exchange transfusion is recommended in any infant who is jaundiced with signs of the acute bilirubin encephalopathy including hypertonia, arching, retrocollis and opisthotonos (head and heels drawn back), fever, and high-pitched cry--even if the bilirubin is decreasing (AAP, 2004) (see Table 4).
Typically they will have a retrocollis or torticollis of the neck; tightening of the muscles in the shoulder girdle; or other sustained muscle postures of the neck, trunk, face, or axial muscles.