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.
Signs and symptoms of fatigue. The main symptom of fatigue is exhaustion (severe fatigue) after a physical or mental activity. The patient does not feel refreshed after resting or sleeping. Severe fatigue may undermine the person's ability to carry out their usual activities.