Pseudoparalysis in an infant is suggestive of –
Pseudoparalysis 

A voluntary restriction of motion because of pain, incordination or other cause, but not due to actual muscular paralysis.

Causes of pseudoparalysis

Scurvy (vitamin C deficiency)                o Osteomyelitis
Septic (arthritis)                                          o Congenital syphilis
Acute Rheumatic fever
Vitamin B6 deficiency
Vitamin E deficiency
Vitamin C deficiency