It is also known as laryngeal dystonia. The term spasmodic describes sudden and intermittent jerking movements of muscles and, as such, SD is characterised by poor vocal motor control during speech due to intermittent and involuntary spasms of the laryngeal muscles.
Low iron levels are one of the most common reasons for chronic coldness. Here's why: Iron is a key mineral that helps your red blood cells carry oxygen throughout your body, bringing heat and other nutrients to every cell in your system, explains Dr. Phillips.
Possible causes of hypothermia include: Cold exposure. When the balance between the body's heat production and heat loss tips toward heat loss for a prolonged period, hypothermia can occur. Accidental hypothermia usually happens after cold temperature exposure without enough warm, dry clothing for protection.old exposure. When the balance between the body's heat production and heat loss tips toward heat loss for a prolonged period, hypothermia can occur. Accidental hypothermia usually happens after cold temperature exposure without enough warm, dry clothing for protection.