**Question:** All of the following are features of Pseudobulbar palsy, except:

A. Excessive emotional lability
B. Difficulty swallowing
C. Severe motor deficits
D. Absence of limb spasticity

**Core Concept:**
Pseudobulbar palsy is a neurological disorder characterized by involuntary emotional lability, difficulty with swallowing, and uncoordinated and dysarthric speech due to lesions in the corticobulbar and corticospinal tracts. It is distinct from bulbar palsy, which primarily affects the bulbar region and presents with limb spasticity, dysarthria, dysphagia, and oromandibular dystonia.

**Why the Correct Answer is Right:**
Difficulty swallowing (dysphagia) is a common feature of pseudobulbar palsy due to involvement of the corticobulbar and corticospinal tracts. However, absence of limb spasticity (option D) is not a feature of pseudobulbar palsy. In contrast, limb spasticity is a key feature of bulbar palsy, particularly when caused by lesions in the brainstem, basal ganglia, or upper motor neuron disease.

**Why Each Wrong Option is Incorrect:**
Option A (excessive emotional lability) is a correct feature of pseudobulbar palsy as it is caused by damage to the corticobulbar tracts, which control facial and limb movements, including emotional expression.

Option B (absence of limb spasticity) is incorrect because, as mentioned above, limb spasticity is a hallmark feature of bulbar palsy due to brainstem, basal ganglia, or upper motor neuron disease.

**Clinical Pearl:**
A correct differentiation between pseudobulbar palsy and bulbar palsy is crucial for appropriate diagnosis and management. In pseudobulbar palsy, interventions focus on managing emotional lability, dysphagia, and speech difficulties. In bulbar palsy, treatment addresses limb spasticity and spasticity-related complications.

**Correct Answer:** Dysphagia (difficulty swallowing) is the correct answer because it is a common feature of pseudobulbar palsy but is not a feature of bulbar palsy.