Unilateral Hand Numbness
Unilateral hand numbness is a common complaint with multiple potential causes. Careful examination of the anatomical pattern of the numbness helps identify the most likely location of the causative lesion….
Unilateral Hand Weakness
Careful examination of the anatomical pattern of unilateral hand weakness helps identify the most likely location of the causative lesion. In some cases, clinical weakness is subtle and the pattern…
Wrist Drop
Wrist drop refers to an impairment in hand extension at the wrist. There is usually concurrent finger extension weakness (“finger drop”). The most common localizations are peripheral processes, such as…
Proximal Weakness
Symmetric proximal weakness is most commonly associated with primary muscle disease (myopathy). However, diseases of the neuromuscular junction, neuropathies, spinal cord disease, and very rarely cerebral infarction can produce similar…
Dysarthria
A. Dysarthria refers to abnormal phonic characteristics of speech production due to impairment of the motor processes of speech. This contrasts with aphasia, in which abnormalities of language underlie impaired…
Pulsatile Tinnitus
Pulsatile tinnitus refers to a perception of sound that coincides with the heartbeat. It may arise from a vascular lesion causing disruption of laminar flow, leading to turbulence that produces…
Hearing Loss
Evaluation of hearing loss begins with determining whether one or both ears are involved. With bilateral symmetric hearing loss, symptoms are almost always slowly progressive over time. Unilateral hearing loss…
Recurrent Episodic Dizziness
Patients use the term “dizziness” to refer to many qualitatively different symptoms. Lightheadedness, such as is seen with presyncope, gait imbalance, true vertigo, and, not uncommonly, generalized weakness or mental…
Acute Vertigo
A. Acute continuous vertigo, with onset over seconds to hours, is a common symptom. It is often associated with nausea, vomiting, gait unsteadiness, head motion intolerance, and nystagmus. The main…
Facial Weakness
A. The upper motor neurons that innervate the face (corticobulbar tract) originate from the primary motor cortex in the frontal lobe and travel through corona radiata and genu of the…
