Definition

1. Noun:
   • A form of muscular dystrophy: "Distal muscular dystrophy" is a specific type of muscular disorder characterized by progressive weakness and degeneration of skeletal muscles.
   • Onset and symptoms: It typically begins in adulthood, between 40 and 60 years of age, and primarily affects the muscles of the hands, forearms, and lower legs, leading to weakness and wasting.
   • Inheritance pattern: This condition is inherited in an autosomal dominant manner, meaning only one copy of the altered gene from a parent is sufficient to cause the disorder.

Usage Examples

• Noun:
  • The patient was diagnosed with distal muscular dystrophy after experiencing weakness in her hands.
  • Research into distal muscular dystrophy focuses on understanding its genetic causes.
  • Unlike some other forms, distal muscular dystrophy often starts later in life.

Advanced Usage

• Medical context: The term is used precisely in clinical and genetic discussions to distinguish this condition from other muscular dystrophies like Duchenne or Becker.
  • The differential diagnosis ruled out myasthenia gravis and confirmed it was distal muscular dystrophy.

Variants and Related Words

• Distal myopathy: A sometimes synonymous term used for muscular disorders primarily affecting distal muscles (those farther from the body's center).
• Muscular dystrophy (n): The broader category of genetic diseases involving progressive weakness and loss of muscle mass.
• Autosomal dominant (adj. phrase): Describing the inheritance pattern where a single altered gene copy from one parent can cause the trait or disorder.

Synonyms

• Distal myopathy: Often used interchangeably, though subtle clinical distinctions may exist.
• Late-onset muscular dystrophy: A descriptive synonym highlighting the typical age of onset.

Related Phrases

• "Inherited neuromuscular disease": A broader descriptive phrase that includes distal muscular dystrophy.
• "Progressive muscle wasting": A phrase describing the key symptom of the condition.

Noun

1. a form of muscular dystrophy that sets in between 40 and 60 years of age and is characterized by weakness and wasting of the muscles of the hands and forearms and lower legs; inheritance is autosomal dominant