Examples of symptoms of an undiagnosed illness and medically unexplained chronic multi-symptom illness defined by a cluster of signs and symptoms include: chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome, fatigue, signs or symptoms involving the skin, skin disorders, headache, muscle pain, joint pain, neurological signs or symptoms, neuropsychological signs or symptoms, signs or symptoms involving the respiratory system (upper or lower), sleep disturbances, gastrointestinal signs or symptoms, cardiovascular signs or symptoms, abnormal weight loss, and menstrual disorders.
Presumptive service
connection may be
granted for the following
infectious diseases:
- Brucellosis
- Campylobacter jejuni
- Coxiella burnetti (Q fever)
- Malaria
- Mycobacterium tuberculosis
- Nontyphoid Salmonella
- Shigella
- Visceral leishmaniasis
- West Nile virus
Qualifying periods of service for these infectious diseases include active military, naval, or air service in the above stated Southwest Asia theater of operations during the Gulf War period of August 2, 1990, to July 30, 1991, or active military, naval, or air service on or after September 19, 2001, in Afghanistan.