An adult patient presents with morning stiffness, swelling, limited range of motion, and symmetrical joint pain in the hips after physical exertion or during cold weather. Heberden's and Bouchard's nodes are noted on the fingers. Which disorder is described?

A. Loss of voluntary movement: Huntington's disease is a neurodegenerative disorder characterized by the progressive loss of voluntary movement, leading to difficulties in performing daily activities.

B. Numbness: Numbness is not typically associated with Huntington's disease, which primarily affects movement and cognitive function.

C. Constipation: While constipation can occur in many conditions, it is not a hallmark symptom of Huntington's disease.

D. Urinary dysfunction: Urinary dysfunction is not a primary symptom of Huntington's disease.

E. Visual dysfunction: Visual dysfunction is not typically associated with Huntington's disease.

F. Dyskinesia: Dyskinesia, or involuntary, erratic movements, is a hallmark symptom of Huntington's disease. It is one of the main motor symptoms observed in affected individuals.

A. A complication of a medical or surgical procedure: This describes an iatrogenic pneumothorax, not a primary spontaneous pneumothorax.

B. A wound that allows air into the pleural cavity but not out: This describes a tension pneumothorax, not a primary spontaneous pneumothorax.

C. No underlying lung disease and no inciting event: A primary spontaneous pneumothorax occurs without any apparent cause or underlying lung disease, often in healthy individuals, especially young, tall, thin men.

D. Underlying lung disease as well as air entering the pleural space via ruptured blebs: This describes a secondary spontaneous pneumothorax, not a primary one.