A patient has preserved light touch and absent pain and temperature over the left upper limb. This pattern of sensory loss is called-
Dissociated sensory loss describes the loss of pain and temperature sensation resulting from involvement of the crossing of spinothalamic second-order neurons, with sparing of dorsal column function. Worsening spasticity is attributable to increasing involvement of the descending coicospinal tracts Ref Harrison20th edition pg 2236
Stock and glove type
Segmental type
Dissociated type
Mononeuritis type
C.N.S