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.
If your body reaches the new temperature that's been set by the hypothalamus â say 102Â°F (38.9Â°C) â you won't feel cold anymore. According to your hypothalamus, your temperature is where it should be! After the cause of the fever disappears, your hypothalamus will set everything back to a normal temperature.