View source for Spinal muscular atrophy symptoms

Infantile SMA is the most severe form. Some of the symptoms include:
*[[muscle weakness]]
*[[poor muscle tone]]
*weak cry
*limpness or a tendency to flop
*difficulty sucking or [[swallowing]]
*accumulation of [[secretion]]s in the lungs or throat
*legs that tend to be weaker than the arms
*[[hypotonia]], [[areflexia]], and multiple congenital [[contracture]]s ([[arthrogryposis]]) associated with loss of [[Anterior horn (spinal cord)|anterior horn cells]]
*feeding difficulties
*increased susceptibility to [[respiratory tract infection]]s
*[[developmental milestones]], such as lifting the head or sitting up, can't be reached.