Most applicants who apply for an NIW petition hold advanced degrees rather than possessing âexceptional abilities.â For advanced degree holders petitioning for an EB-2 visa, a labor certification and U.S. job offer are usually required. These standard requisites are not necessary for an NIW, however.
1 However, in about a third of patients the cause is not found and the diagnosis is not known.  There are numerous causes of fatigue symptoms. Examples of some treatable causes of fatigue include anemia, diabetes,thyroid disease, heart disease, COPD and sleep disorders (Table).
Hyperparathyroidism can cause fatigue and weakness, increased thirst, impaired thinking, and bone fractures. Insulin reaction (hypoglycemia) An insulin reaction is the result of low blood sugar and causes anxiety, hunger, shaking, dizziness, and more. Heat exhaustion Heat exhaustion causes intense thirst, heavy sweating, pale, cool, and moist skin, muscle cramps, and more.