What Types of Radiation Are There? The radiation one typically encounters is one of four types: alpha radiation, beta radiation, gamma radiation, and x radiation. Neutron radiation is also encountered in nuclear power plants and high-altitude flight and emitted from some industrial radioactive sources. Alpha Radiation.
Fatigue: A condition characterized by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness and tiredness. Fatigue can be acute and come on suddenly or chronic and persist.
Fatigue is a symptom of an underlying disease and is described in many ways from feeling weak to being constantly tired or lacking energy. There may be other associated symptoms depending upon the underlying cause. 1  Individuals with heart disease, lung disease, or anemia may complain of associated shortness of breath or tiring easily with minimal activity.