Hyperthermia, muscle rigidity, tachycardia, acidosis, shock, coma, rhabdomyolysis. Tardive Dyskinesia . Involuntary movements of the tongue, face, mouth, or jaw associated with long-term administration of antipsychotics. Elderly females at highest risk. May be irreversible.
Some disorders have similar or even overlapping symptoms.
The clinician, therefore, in his diagnostic attempt has to differentiate against the following disorders which need to be ruled out to establish a precise diagnosis.