Did the Tribunal ask the right question?
34 Ms Macdonnell of Counsel for the applicant submitted that the Tribunal had erred in determining that the material before it was capable of supporting a finding that the veteran was suffering from GAD at the time of his death.
35 It was submitted that there is no diagnosis in any of the medical reports that the veteran suffered from GAD. The highest that the medical evidence goes is the opinion of Dr Holwill that the symptoms described by the veteran's wife were "suggestive of" PTSD or GAD and the fact that Dr Whitaker made a diagnosis of "aggravated anxiety reaction".
36 The applicant also submitted that the Tribunal had erred by accepting medical evidence of GAD without having regard to the description of that disorder as set out in the SoP (or in DSM-IV); (see Repatriation Commission v Gosewinckel [1999] FCA 1273; (1999) 59 ALD 690 per Weinberg J at [55]). In Gosewinkel, Weinberg J found that the Tribunal had not erred in omitting to deal with each of the diagnostic criteria because his Honour considered that the Tribunal had regard to the prescribed criteria.
37 Ms Macdonnell distinguished the decision of Weinberg J in Gosewinckel on the basis that his Honour there indicated that it was implicit in the evidence that the veteran met each of the requisite criteria for GAD whereas here, it was submitted, neither medical witness had made any reference whatsoever to the symptoms of GAD as set out in the SoP. Moreover, Ms Macdonnell contended, there was no evidence before the Tribunal from which it could find on the balance of probabilities that the minimum number of the diagnostic features or symptoms required by the SoP had been manifested by the veteran.
38 In support of this contention, Ms Macdonnell submitted that the medical evidence before the Tribunal was equally capable, for example, of supporting a diagnosis that the veteran suffered from PTSD for which a different SoP prescribes a quite different set of symptoms. It was submitted that the only common symptoms in the SoP for GAD and the SoP for PTSD are "irritability", "difficulty falling or staying asleep" and "difficulty concentrating". Further, the symptoms described by Dr Holwill included only "irritability" and evidence of "nightmares" which could possibly have created difficulty falling or staying asleep or restless unsatisfying sleep which may equally have been indicative of PTSD.
39 In relation to the reliance placed upon the respondent's evidence at the hearing, the applicant submitted that the respondent had not given any evidence which went to the features of GAD. For example, the respondent recounted to Dr Holwill that the veteran was always "nervy" by which Dr Holwill said "she meant tense, with a prominent startle response" which is a possible symptom of PTSD but not GAD. The respondent also gave evidence to the effect that the veteran had not been a drinker before the war but that on his return he drank daily and it was her belief that "He wanted to try and cover things up, forget things".
40 Ms Macdonnell also submitted that, although drinking or a desire to forget or avoid may be relevant to PTSD, drinking or wanting to forget are not features of GAD. The features of GAD are characterised as excessive anxiety or worry (apprehensive expectation).
41 The applicant also submitted that the Tribunal had erred by basing its finding that the veteran was suffering from GAD at the time of his death on the Commission's acceptance that there was material "which pointed to the veteran having experienced a 'severe psychosocial stressor' … whilst acting as a stretcher bearer in New Guinea"; (see [64] and [65] of the Tribunal's reasons at [23] above). Ms Macdonnell for the applicant submitted that, in the case of GAD, a severe psychosocial stressor is not a feature or symptom of the condition which is relevant to diagnosis. It was noted, in passing, that the primary feature of the condition PTSD is exposure to, or experience of, a traumatic event of a certain kind.
42 The respondent submitted that it was open to the Tribunal to find as it did, in reliance on the evidence of Drs Holwill and Whitaker, that the veteran suffered from GAD; (see [64]-[65] of the Tribunal's reasons reproduced above at [23]).
43 It was contended by the respondent that the Tribunal was not obliged to "tick off" every feature of "generalised anxiety disorder" specified in cl 8 of the relevant SoP. The respondent submitted that here, as in Gosewinkel, it was implicit in the evidence before the Tribunal that the veteran met each of the requisite criteria for GAD.
44 Alternatively, the respondent submitted that it was sufficient for the focus of the Tribunal to be on whether factor 5(a)(ii) of the SoP existed as a minimum. The respondent submitted that the Tribunal had correctly determined that there was evidence that the veteran had experienced a severe psychosocial stressor within the two years immediately before the clinical onset of the anxiety disorder (see [70] of the Tribunal's reasons quoted at [25] above).
45 In the further alternative, it was submitted that it was sufficient for the Tribunal to pay regard, as it did, to the matters set out in [64]-[65] of the Tribunal's reasons reproduced at [23] above. The respondent contended that as long as there is in the material some basis of support for the Tribunal's findings, no error of law can be imputed to the Tribunal; see and compare Australian Broadcasting Tribunal v Bond (1990) 170 CLR 321 at 356. Nor, it was submitted, is there any error of law in simply making a wrong finding of fact; Waterford v The Commonwealth (1987) 163 CLR 54 at 77 per Brennan J.