Differential diagnosis of severe stiffness or catatonia are :
-meningitis
-stiff person syndrome
-lethal catatonia
-strychnine poisoning
-tetanus
-Huntington’s disease
-torticollis ( dystonic reaction to neuroleptics)
-hypokalemia leads to tetany
-malignant hyperthermia
-neuroleptic malignant syndrome
-seizure
-status epilepticus
-viral encephalitis
-catatonic schizophrenia
-Parkinson’s disease
-meningitis
-stiff person syndrome
-lethal catatonia
-strychnine poisoning
-tetanus
-Huntington’s disease
-torticollis ( dystonic reaction to neuroleptics)
-hypokalemia leads to tetany
-malignant hyperthermia
-neuroleptic malignant syndrome
-seizure
-status epilepticus
-viral encephalitis
-catatonic schizophrenia
-Parkinson’s disease