This condition is known, medically, as anorexia nervosa (in the young person) and cachexia (in the elderly or infirm - such as someone with end-stage cancer).
I myself am looking to see if there is indeed such a condition. Well, what I mean is that generally it is called hypokalemia. Hypo, meaning not enough, is exactly what this is talking about. Hypopotassium, if you ever indeed write it that way, is having too little or not enough potassium in the body where as hyper would be having too much. It is an important electrolyte in the body, and too much or too little can be a bad thing. However, it is generally called hypokalemia.
The state of having a stable internal condition is called homeostasis.
Homeostasis.
In physiology, a steady state is called homeostasis.
Hypothermia: The condition of having an abnormally low body temperature, typically one that is dangerously low. Hyperthermia: The condition of having an abnormally high body temperature, typically one that is dangerously high.
hypoxia
Anything that affects the entire body is called "Systemic" meaning the entire system.
it is obesity
You have it all< it causes strong body odors
The condition is called as infective disease.
Sepsis is a condition that is caused by an infection and makes the whole body inflamed. Having sepsis may cause bruising under the nails.
Having an over abundance of sugar in your bloodstream is called Hyperglycemia.