Table 1 Childhood (<10 Years of Age), adolescence (>10 Years of Age) and lifetime prevalence of catatonic features in 18 youngsters suffering from Schizophrenia

Movement

Odd gait

7/18 (38.9%)

5/18 (27.8%)

8/18 (44.4%)

Poor coordination

4/18 (22.2%)

7/18 (38.9%)

8/18 (44.4%)

Odd hand postures

0/18 (0.0%)

2/18 (11.1%)

2/18 (11.1%)

Runs in circles

0/18 (0.0%)

0/18 (0.0%)

0/18 (0.0%)

Rocks while sitting

2/18 (11.1%)

7/18 (38.9%)

8/18 (44.4%)

Complex body movements

0/18 (0.0%)

4/18 (22.2%)

4/18 (22.2%)

Walks on tiptoe

2/18 (11.1%)

1/18 (5.6%)

2/18 (11.1%)

Grimaces

2/18 (11.1%)

4/18 (22.2%)

5/18 (27.8%)

Lacks facial expression

4/18 (22.2%)

17/18 (94.4%)

17/18 (94.4%)

Speech and vocalization

Immediate echolalia

2/18 (11.1%)

0/18 (0.0%)

2/18 (11.1%)

Delayed echolalia

4/18 (22.2%)

5/18 (27.8%)

8/18 (44.4%)

Odd intonation

4/18 (22.2%)

14/18 (77.8%)

14/18 (77.8%)

Shrieks for no reason

1/18 (5.6%)

3/18 (16.7%)

3/18 (16.7%)

Laughs for no reason

0/18 (0.0%)

8/18 (44.4%)

8/18 (44.4%)

Behavior

Eye contact

Poor eye contact

5/18 (27.8%)

14/18 (77.8%)

14/18 (77.8%)

Sideways glances

2/18 (11.1%)

5/18 (27.8%)

5/18 (27.8%)

Blank look in eyes

2/18 (11.1%)

9/18 (50.0%)

10/18 (55.6%)

Stares

3/18 (16.7%)

7/18 (38.9%)

7/18 (38.9%)

Visual fascinations

Spins objects

0/18 (0.0%)

0/18 (0.0%)

0/18 (0.0%)

Twists hands near eyes

0/18 (0.0%)

0/18 (0.0%)

0/18 (0.0%)

Closely inspects objects from different angles

0/18 (0.0%)

0/18 (0.0%)

0/18 (0.0%)

Unsocial behavior

Shouts for no reason

5/18 (27.8%)

8/18 (44.4%)

8/18 (44.4%)

Aggressive for no reason

2/18 (11.1%)

8/18 (44.4%)

8/18 (44.4%)

Lack of cooperation

8/18 (44.4%)

14/18 (77.8%)

15/18 (83.3%)

Destructive

6/18 (33.3%)

7/18 (38.9%)

10/18 (55.6%)

Strips in public

4/18 (22.2%)

6/18 (33.3%)

6/18 (33.3%)

Inappropriate personal habits

1/18 (5.6%)

1/18 (5.6%)

1/18 (5.6%)

Hyperactive

1/18 (5.6%)

3/18 (16.7%)

4/18 (22.2%)