# Types of Spinal Muscular Atrophy (SMA)
Keywords: spinal muscular atrophy, SMA types, muscle weakness, muscle atrophy, SMA symptoms

> This page provides an overview of spinal muscular atrophy (SMA), its types, symptoms, and characteristics, along with references for further understanding.

## Details
- [Signs and Symptoms of SMA](#): SMA symptoms include progressive muscle weakness, floppiness, and muscle wasting, typically symmetrical on both sides of the body.
- [Characteristics of Spinal Muscular Atrophy](#): SMA is categorized based on the age of onset and functional ability, with varying severity within each type.
- [SMA in Infants and Children](#): Discusses the impact and manifestations of SMA in younger populations.
- [SMA in Adults](#): Explores how SMA affects adults and provides insights into their experiences.
- [References](#): A list of scientific studies and resources for deeper understanding of SMA.