4 doctors weighed in:

What are the symptoms of sma? 

4 doctors weighed in
Dr. Diane Minich
Family Medicine
1 doctor agrees

In brief: Symptoms SMA

Areflexia, particularly in extremities overall muscle weakness, poor muscle tone, limpness or a tendency to flop (the "floppy baby" syndrome) difficulty achieving developmental milestones, difficulty sitting/standing/walking in infants: adopting of a frog-leg position when sitting (hips abducted and knees flexed) loss of strength of the pulmonary muscles: weak cough, weak cry.

In brief: Symptoms SMA

Areflexia, particularly in extremities overall muscle weakness, poor muscle tone, limpness or a tendency to flop (the "floppy baby" syndrome) difficulty achieving developmental milestones, difficulty sitting/standing/walking in infants: adopting of a frog-leg position when sitting (hips abducted and knees flexed) loss of strength of the pulmonary muscles: weak cough, weak cry.
Dr. Diane Minich
Dr. Diane Minich
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Dr. Vasu Brown
Anti-Aging Medicine
1 doctor agrees

In brief: Muscle weakness

The primary feature of sma is muscle weakness, accompanied by atrophy of muscle.
This is the result of denervation, or loss of the signal to contract, that is transmitted from the spinal cord. This is normally transmitted from motor neurons in the spinal cord to muscle via the motor neuron's axon, but either the motor neuron with its axon, or the axon itself, is lost in all forms of sma.

In brief: Muscle weakness

The primary feature of sma is muscle weakness, accompanied by atrophy of muscle.
This is the result of denervation, or loss of the signal to contract, that is transmitted from the spinal cord. This is normally transmitted from motor neurons in the spinal cord to muscle via the motor neuron's axon, but either the motor neuron with its axon, or the axon itself, is lost in all forms of sma.
Dr. Vasu Brown
Dr. Vasu Brown
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