Hyperthermia
Thermoregulation is the term we give to "temperature control" or the like. For example, the human body likes to run at an internal temperature of 98.6 degrees Fahrenheit. And we have mechanisms within us that control our internal temperature. The biochemical structures that accomplish this are collectively termed the thermoregulation mechanism of the body. Other animals have them, too, but some lack them - like reptiles. A link is provided below.
Objective is the medical term meaning without emotion.
Wernicke's encephalopathy is the medical term meaning degenerative brain disorder caused by lack of thiamine.
Acapnia is the medical term meaning lack of carbon dioxide
elimination
atrophy
Clubbing is the medical term for the changes in fingernails or toenails associated with chronic lack of oxygen.
Anesthesiologist
Agenesis is the medical term meaning absent development of an organ or tissue. Atresia is the medical term meaning congenital absence or development of a tube.
If you are referring to lack of or poor muscle tone then "hypotonia" is the correct medical term for low tone, and "atony" for absent tone.
Encopresis is the medical term meaning incontinence of stool. If the patient has never had bowel control, this condition will be called primary encopresis.
Hypochromia (as in hypochromic anemia) is the medical term meaning deficiency in hemoglobin.