#neurological symptom

• Abulia — A severe mental disorder or neurological symptom characterized by the total absence or pathological diminution of willpower, initiative, and decision-making power. The affected individual retains awareness of necessary actions and possesses intact intellectual or motor functions, yet remains biologically and psychically unable to generate the internal impulse indispensable for initiating and sustaining a voluntary act, a manifestation frequently associated with frontal lobe lesions, schizophrenia, or major depression.
• Numbness — A transient pathological or physiological state characterized by the partial or total loss of tactile sensitivity and voluntary mobility in a specific region of the body, often associated with tingling or prickling sensations. This phenomenon shares characteristics with paresthesia and occurs due to mechanical compression of peripheral nerves, poor blood circulation, or as a symptom of neurological disorders.
• Aprosexia — A severe form of attention disorder, characterized by the absolute or partial pathological inability to concentrate, fixate, and maintain mental focus on an object, stimulus, or activity. This structural phenomenon frequently occurs in states of intense chronic fatigue, brain trauma, severe neurotic episodes, or various degenerative psychiatric conditions.
• Asyntactic — Not syntactic, lacking syntactic structure; violating, ignoring, or not conforming to the rules of word organization and combination within clauses or sentences. In linguistics, it describes utterances formed by the simple chaotic juxtaposition of words; in medicine and neurology, it applies to the fragmented speech specific to Broca's aphasia patients, characterized by the loss of structural capacity to construct grammatically correct sentences.