Diagnostic Assessment — Skin - Seborrheic Dermatitis
Example 1 of 1 · fictitious patient (Veteran F)
Diagnostic Assessment
SKIN - SEBORRHEIC DERMATITIS
Statement of Principles concerning seborrhoeic dermatitis (Reasonable Hypothesis) Instrument No. 43 of 2021 and Statement of Principles concerning seborrhoeic dermatitis (Balance of Probabilities) Instrument No. 44 of 2021.
ADF History
Name: The veteran
Date of Birth: [withheld]
Occupation: Communications, SASR
Enlistment Date: 17 Dec 1993
Discharge Date: Still Serving
Occupational History
As a Communications specialist in the Australian Defence Force a specialist regiment (SASR), the veteran has been exposed to various occupational factors that can contribute to dermatological conditions. SASR operations often involve prolonged periods without access to optimal hygiene facilities, which can exacerbate seborrhoeic dermatitis. The role requires wearing tactical headgear for extended periods, creating a warm and humid microenvironment favorable for Malassezia yeast proliferation on the scalp and face. Operational stress is a common feature of SASR deployments, and psychological stress is a known trigger for seborrhoeic dermatitis flares. Deployments to different climatic conditions, particularly hot and humid environments, can also trigger or worsen the condition. These occupational exposures represent significant risk factors for the development and exacerbation of seborrhoeic dermatitis.
History
The veteran the veteran a Communications specialist with the Australian a specialist regiment, developed scaly erythematous patches on the scalp, eyebrows, nasolabial folds, and beard area. Clinical evaluation by dermatology has confirmed seborrhoeic dermatitis affecting multiple seborrhoeic areas.
Timeline
- 02 Mar 2017: Initial presentation with flaky scalp and facial redness. Patient reports "persistent dandruff and redness around nose and eyebrows that worsens during field operations". • 16 Mar 2017: Dermatology assessment documented erythematous patches with greasy yellowish scale on scalp, eyebrows, nasolabial folds, and beard area. Clinical diagnosis of seborrhoeic dermatitis. • 30 Mar 2017: Initial treatment with ketoconazole shampoo and low-potency topical corticosteroid. "Classic presentation of seborrhoeic dermatitis in sebum-rich areas". • 28 Apr 2017: Follow-up noting improvement but continued flares with operational deployments. "Exacerbations associated with field conditions and stress". • 25 May 2017: Adjustment of treatment regimen with addition of topical antifungal cream for facial lesions. "Moderate seborrhoeic dermatitis requiring multimodal therapy". • 23 Jun 2017: Significant improvement noted with combined therapy, but pattern of recurrence with field operations continues. "Chronic seborrhoeic dermatitis with good response to therapy but requires ongoing management". • 20 Jul 2017: Maintenance therapy plan established with prophylactic use during high-risk periods. "Condition manageable but clearly exacerbated by occupational factors".
Symptoms
The veteran initially presented with a flaky scalp (dandruff) and erythematous patches with yellowish greasy scale in the eyebrows, nasolabial folds, and beard area. He reported pruritus (itching) and occasional burning sensation, particularly when sweating. The symptoms were described as waxing and waning in severity, with clear exacerbations during field operations that involved prolonged helmet wear and limited access to regular hygiene. Physical examination revealed well-demarcated erythematous patches with adherent yellowish greasy scale, distributed in a pattern consistent with seborrhoeic dermatitis: scalp (particularly the frontal hairline and behind the ears), eyebrows, glabella, nasolabial folds, beard area, and subtle involvement of the presternal area. Current symptoms include recurrent episodes of scaling and erythema in the affected areas, typically triggered by operational deployments, stress, and hot humid conditions. The condition has responded well to medical therapy but requires ongoing management with prophylactic treatment during high-risk periods to prevent significant flares.
Imaging
No imaging studies were performed as the diagnosis of seborrhoeic dermatitis is based on characteristic clinical appearance and distribution pattern.
1. What is the formal diagnosis of the condition claimed above?
The formal diagnosis is Seborrheic Dermatitis (ICD-10 Code: L21.9). This diagnosis falls under the DVA Statement of Principles concerning seborrhoeic dermatitis (Reasonable Hypothesis) Instrument No. 43 of 2021 and Statement of Principles concerning seborrhoeic dermatitis (Balance of Probabilities) Instrument No. 44 of 2021.
Seborrhoeic dermatitis is a chronic, relapsing inflammatory skin condition characterized by erythematous patches with yellowish, greasy scale occurring in areas rich in sebaceous glands. The condition commonly affects the scalp (manifesting as dandruff in mild cases), face (particularly the eyebrows, glabella, nasolabial folds, and beard area), ears, and central chest.
The pathophysiology involves an inflammatory reaction to Malassezia yeast species, which are normal commensals of human skin but can trigger inflammation in susceptible individuals. Sebum production, immune dysregulation, and various environmental factors contribute to the development and exacerbation of the condition.
In the veteran case, the clinical presentation with erythematous patches and greasy yellowish scale affecting typical seborrhoeic areas (scalp, eyebrows, nasolabial folds, and beard area) is characteristic of seborrhoeic dermatitis. The relapsing and remitting course with clear environmental triggers is also consistent with this diagnosis. Additionally, the response to appropriate antifungal and anti-inflammatory therapy supports the diagnosis.
2. For each diagnosis identified, please also provide the following dates:
When did the veteran first experience symptoms attributable to this condition? The veteran first experienced symptoms attributable to seborrhoeic dermatitis on or before 02 March 2017, when he initially presented with flaky scalp and facial redness. He specifically reported "persistent dandruff and redness around nose and eyebrows that worsens during field operations," suggesting the condition had been present for some time before seeking medical attention.
When did the veteran first present to a health / medical provider for this condition? The veteran first presented to a health provider for this condition on 02 March 2017, when he reported to the ADF Medical Centre with complaints of a flaky scalp and facial redness.
When was the condition confirmed / formally diagnosed? The condition was formally diagnosed during a dermatology assessment on 16 Mar 2017, which documented erythematous patches with greasy yellowish scale on the scalp, eyebrows, nasolabial folds, and beard area, characteristic of seborrhoeic dermatitis. The dermatologist specifically noted the "classic presentation of seborrhoeic dermatitis in sebum-rich areas" during the follow-up visit on 30 Mar 2017.
When did the veteran first present to you (or your practice) for this condition? 22 October 2017
3. How was this diagnosis confirmed? i.e. what were the key symptoms and signs, investigation results, specialist opinions? Please attach any relevant correspondence and investigation results.
The diagnosis of Seborrheic Dermatitis was confirmed through clinical evaluation and specialist dermatology consultation:
Key symptoms and history included: • Flaky scalp (dandruff) and erythematous patches with scale on the face • Pruritus (itching) and occasional burning sensation, particularly when sweating • Waxing and waning course with exacerbations during field operations • Worsening with prolonged helmet wear and limited access to regular hygiene • Pattern of improvement with appropriate therapy and recurrence with cessation
Clinical examination findings included: • Well-demarcated erythematous patches with adherent yellowish greasy scale • Characteristic distribution in sebum-rich areas: scalp (particularly frontal hairline and behind ears), eyebrows, glabella, nasolabial folds, beard area, and subtle involvement of the presternal area • Absence of vesicles, pustules, or other features that would suggest alternative diagnoses
Specialist opinion from dermatology assessment on 16 Mar 2017 established the diagnosis of seborrhoeic dermatitis based on the characteristic clinical appearance and distribution pattern. The condition was further characterized as having a "classic presentation of seborrhoeic dermatitis in sebum-rich areas."
The therapeutic response also supported the diagnosis, with significant improvement noted following treatment with ketoconazole shampoo (antifungal) and topical corticosteroids, which are standard therapies for seborrhoeic dermatitis.
No laboratory investigations or imaging studies were performed, as the diagnosis of seborrhoeic dermatitis is typically made on clinical grounds alone. Skin scraping and fungal culture are occasionally performed in atypical cases but were not necessary given the classic presentation in this case.
4. What do you consider to be the cause(s) of the condition in this veteran? Give consideration to constitutional and common risk factors, pre-existing injuries or diseases, and occupational or lifestyle risks, as well as direct causative mechanisms.
Factors under Statement of Principles concerning seborrhoeic dermatitis (Balance of Probabilities) Instrument No. 44 of 2021:
having infection with human immunodeficiency virus before the clinical onset of seborrhoeic dermatitis: NOT MET
- No documented HIV infection.
having Parkinson's disease or secondary parkinsonism at the time of the clinical onset of seborrhoeic dermatitis: NOT MET
- No diagnosis of Parkinson's disease or parkinsonism documented.
having a physical disability or psychiatric disease which significantly limits the person's ability to maintain personal hygiene of the affected area at the time of the clinical onset of seborrhoeic dermatitis: NOT MET
- No such disability or psychiatric disease documented.
being immobile for at least the four weeks before the clinical onset of seborrhoeic dermatitis: NOT MET
- No period of immobility documented.
taking a drug from the specified list of drugs for the treatment of cancer or autoimmune disease for at least the seven days before the clinical onset of seborrhoeic dermatitis: NOT MET
- No documented treatment with drugs from the specified list.
taking a drug which is associated in the individual with the clinical onset of seborrhoeic dermatitis during drug therapy:NOT MET
- No documented drug-induced seborrhoeic dermatitis.
inability to obtain appropriate clinical management for seborrhoeic dermatitis: NOT MET
- There is no evidence that appropriate management was unavailable once the condition developed.
Factors under Statement of Principles concerning seborrhoeic dermatitis (Reasonable Hypothesis) Instrument No. 43 of 2021:
The factors in the Reasonable Hypothesis SOP include the same factors as the Balance of Probabilities SOP, with the same NOT MET status for all clinical onset factors. However, the RH SOP includes additional factors for clinical worsening:
for clinical worsening only, being in a hot and humid environment for at least eight hours within the 48 hours before the clinical worsening of seborrhoeic dermatitis: MET
- SASR operations frequently involve deployment to hot and humid environments, and the medical records specifically document exacerbations "associated with field conditions" and that the condition "worsens during field operations." These field conditions would routinely involve exposure to hot and humid environments for extended periods, particularly when wearing tactical headgear that creates a localized hot and humid microenvironment around the scalp and face.
While the veteran does not meet the specific SOP factors for clinical onset, his occupational exposures as a Communications specialist in SASR have contributed significantly to the exacerbation and recurrent nature of his condition. The specific occupational factors most relevant include:
- Prolonged wearing of tactical headgear during operations, creating a warm and humid microenvironment favorable for Malassezia yeast proliferation
- Limited access to optimal hygiene facilities during field operations
- Exposure to hot and humid environments during deployments
- Operational stress, which is a known exacerbating factor for inflammatory skin conditions
The temporal relationship between operational exposures and symptom exacerbation is clearly documented, with the pattern of recurrence with field operations despite appropriate medical therapy supporting a causal relationship between occupational environmental exposures and the condition's severity.
Sequelae
There is no indication that the seborrhoeic dermatitis is a sequela of another condition, although the co-existence of acne rosacea may represent a contributing factor to the development of seborrhoeic dermatitis, as inflammatory skin conditions can sometimes overlap or exacerbate each other.
Unintended Consequence
There is no evidence to suggest that the seborrhoeic dermatitis resulted as an unintended consequence of medical treatment provided by the Commonwealth.
Inability to Attain Appropriate Medical Management
There is no evidence that the veteran experienced any inability to obtain appropriate clinical management for his seborrhoeic dermatitis. Upon reporting symptoms, he received timely assessment, specialist dermatology consultation, and appropriate medical therapy including ketoconazole shampoo, topical corticosteroids, and topical antifungal creams.
The % contribution of the causes is 100% and significant
5. Please provide a Health Summary and a medication / prescribing history. -see attached report
