The Secretary may pay compensation under this subchapter to a Persian Gulf veteran with a qualifying chronic disability that became manifest—

The Secretary may pay compensation under this subchapter to a Persian Gulf veteran with a qualifying chronic disability that became manifest—

(A) during service on active duty in the Armed Forces in the Southwest Asia theater of operations during the Persian Gulf War; or

(B) to a degree of 10 percent or more during the presumptive period prescribed under subsection (b).

For purposes of this subsection, the term “qualifying chronic disability” means a chronic disability resulting from any of the following (or any combination of any of the following):

(A) An undiagnosed illness.

(B) A medically unexplained chronic multisymptom illness (such as chronic fatigue syndrome, fibromyalgia, and irritable bowel syndrome) that is defined by a cluster of signs or symptoms.

(C) Any diagnosed illness that the Secretary determines in regulations prescribed under subsection (d) warrants a presumption of service-connection.

The Secretary shall prescribe by regulation the period of time following service in the Southwest Asia theater of operations during the Persian Gulf War that the Secretary determines is appropriate for presumption of service connection for purposes of this section. The Secretary’s determination of such period of time shall be made following a review of any available credible medical or scientific evidence and the historical treatment afforded disabilities for which manifestation periods have been established and shall take into account other pertinent circumstances regarding the experiences of veterans of the Persian Gulf War.

Whenever the Secretary determines under section 1118(c) of this title that a presumption of service connection previously established under this section is no longer warranted—

Whenever the Secretary determines under section 1118(c) of this title that a presumption of service connection previously established under this section is no longer warranted—

(A) a veteran who was awarded compensation under this section on the basis of the presumption shall continue to be entitled to receive compensation under this section on that basis; and

(B) a survivor of a veteran who was awarded dependency and indemnity compensation for the death of a veteran resulting from the disease on the basis of the presumption before that date shall continue to be entitled to receive dependency and indemnity compensation on that basis.

(2) This subsection shall cease to be effective on September 30, 2011.

Those regulations shall include the following:

(1) The Secretary shall prescribe regulations to carry out this section.

Those regulations shall include the following:

(A) A description of the period and geographical area or areas of military service in connection with which compensation under this section may be paid.

(B) A description of the illnesses for which compensation under this section may be paid.

(C) A description of any relevant medical characteristic (such as a latency period) associated with each such illness.

A disability for which compensation under this subchapter is payable shall be considered to be service connected for purposes of all other laws of the United States.

For purposes of this section, the term “Persian Gulf veteran” means a veteran who served on active duty in the Armed Forces in the Southwest Asia theater of operations during the Persian Gulf War.

For purposes of this section, signs or symptoms that may be a manifestation of an undiagnosed illness or a chronic multisymptom illness include the following:

(1) Fatigue.

(2) Unexplained rashes or other dermatological signs or symptoms.

(3) Headache.

(4) Muscle pain.

(5) Joint pain.

(6) Neurological signs and symptoms.

(7) Neuropsychological signs or symptoms.

(8) Signs or symptoms involving the upper or lower respiratory system.

(9) Sleep disturbances.

(10) Gastrointestinal signs or symptoms.

(11) Cardiovascular signs or symptoms.

(12) Abnormal weight loss.

(13) Menstrual disorders.

Paragraph (1) does not apply in a case in which—

(1) If the Secretary determines with respect to a medical research project sponsored by the Department that it is necessary for the conduct of the project that Persian Gulf veterans in receipt of compensation under this section or section 1118 of this title participate in the project without the possibility of loss of service connection under either such section, the Secretary shall provide that service connection granted under either such section for disability of a veteran who participated in the research project may not be terminated. Except as provided in paragraph (2), notwithstanding any other provision of law any grant of service-connection protected under this subsection shall remain service-connected for purposes of all provisions of law under this title.

Paragraph (1) does not apply in a case in which—

(A) the original award of compensation or service connection was based on fraud; or

(B) it is clearly shown from military records that the person concerned did not have the requisite service or character of discharge.

(3) The Secretary shall publish in the Federal Register a list of medical research projects sponsored by the Department for which service connection granted under this section or section 1118 of this title may not be terminated pursuant to paragraph (1).

(Added Pub. L. 103–446, title I, § 106(a)(1), Nov. 2, 1994, 108 Stat. 4650; amended Pub. L. 105–277, div. C, title XVI, § 1602(c), Oct. 21, 1998, 112 Stat. 2681–744; Pub. L. 107–103, title II, §§ 202(a), (b)(1), (d)(1), 203(a), Dec. 27, 2001, 115 Stat. 988, 989; Pub. L. 109–233, title V, § 503(1), June 15, 2006, 120 Stat. 415.)