Documenting Chloracne for VA
Establishing the timing of chloracne — and connecting it to Agent Orange exposure — can require medical opinion. REE Medical's board-certified dermatologists provide nexus letters for chloracne claims where medical evidence of timing or causation needs to be formalized.
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Chloracne is a toxic acneform skin disease caused by exposure to chlorinated aromatic compounds — specifically polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and related halogenated chemicals. Unlike common acne vulgaris, which results from hormonal and sebaceous gland dysfunction, chloracne is caused by a specific toxic insult to the skin's sebaceous glands and follicular epithelium.
The clinical presentation of chloracne is distinctive. While regular acne typically affects the face, particularly the nose, chin, and forehead, chloracne characteristically affects areas that are often spared by regular acne:
The lesions in chloracne include closed comedones (whiteheads), open comedones (blackheads), cysts, and straw-colored follicular cysts. In severe cases, chloracne can cause significant inflammatory lesions, skin hyperpigmentation, and permanent scarring. The condition can be persistent — lasting years or even decades after the initial exposure ended — or it can resolve more quickly in cases of limited exposure.
Dermatologists distinguish chloracne from regular acne by distribution (retroauricular, neck, shoulder involvement), lesion type (predominantly comedones rather than inflammatory papules and pustules in early stages), absence of hormonal trigger, and history of chemical exposure. Veterans who were told during service that they "just had acne" should consider whether the distribution and timing match the chloracne pattern — many veterans were never properly diagnosed with what was actually chloracne.
Agent Orange was a herbicide mixture used by the U.S. military in Vietnam for defoliation operations (Operation Ranch Hand) and vegetation control around base perimeters. The name "Agent Orange" refers to the orange-striped barrels in which it was stored. The active herbicidal ingredients were 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T).
The problem was not the herbicides themselves but a highly toxic contaminant produced during the manufacturing process: 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), commonly referred to simply as "dioxin." TCDD is one of the most potent toxic compounds known, with effects measurable at parts per trillion. Even at extremely small doses, TCDD disrupts cellular signaling, causes immunotoxicity, and produces the characteristic skin changes of chloracne.
TCDD is highly lipid-soluble and bioaccumulates in fatty tissues. After a single exposure, TCDD can remain in the body for years — its half-life in humans is approximately 7-11 years. This is why chloracne can persist long after exposure has ended, and why other dioxin-related health effects can manifest years or decades after Vietnam service.
TCDD and related dioxins bind to the aryl hydrocarbon receptor (AhR) — a transcription factor present in many cell types, including keratinocytes and sebocytes (the cells that produce sebum). AhR activation by TCDD disrupts normal epidermal differentiation and sebaceous gland function. The result is metaplasia of sebaceous glands — the glands transform into cyst-forming follicular structures that produce the characteristic comedones and cysts of chloracne. This toxic effect occurs independent of the hormonal pathways that drive common acne.
Chloracne is listed as a presumptive disease under 38 CFR § 3.309(e). However, it carries a unique requirement that distinguishes it from all other conditions on the Agent Orange presumptive list:
Under 38 CFR § 3.309(e), chloracne must have manifested to a degree of 10 percent or more within one year after the last date on which the veteran was exposed to an herbicide agent. This is not optional — it is a statutory requirement for the presumptive to apply. Veterans whose chloracne appeared more than one year after leaving the exposure area must use a different pathway to establish service connection.
Most Vietnam veterans left the Republic of Vietnam at specific, documented dates. The one-year window runs from the date of last herbicide exposure — which VA typically treats as the date the veteran last set foot in Vietnam. If the veteran's chloracne appeared within one year of that date, the presumptive applies without further medical nexus.
The one-year manifestation rule exists because chloracne is one of the most reliable biomarkers of acute dioxin exposure. Unlike the chronic systemic effects of dioxin (cancer, diabetes, etc.) that may take years or decades to manifest, chloracne appears relatively quickly — typically within weeks to months of significant dioxin exposure. The requirement that it appear within one year is intended to ensure that the claimed chloracne is actually the result of dioxin exposure rather than ordinary acne coincidentally diagnosed in the same period.
| Location | Qualifying Period | Notes |
|---|---|---|
| Republic of Vietnam (in-country) | January 9, 1962 – May 7, 1975 | Presumed exposure; one-year window runs from last in-country date |
| Korean Demilitarized Zone (DMZ) | April 1, 1968 – August 31, 1971 | Presumed exposure; one-year window runs from last DMZ date |
| Thailand (certain Royal Thai Air Force Bases) | 1961–1975 | Perimeter herbicide spraying documented; specific bases listed by VA |
| Blue Water Navy — Vietnamese territorial seas | January 9, 1962 – May 7, 1975 | PACT Act 2022 expansion; exposure presumed for territorial sea service |
| Any documented direct herbicide handling/application | Various | Specific documented exposure may establish qualifying exposure |
Once service connection is established, VA rates chloracne under Diagnostic Code 7829 — Chloracne or other acneform disease consistent with chloracne — in 38 CFR Part 4, Schedule for Rating Disabilities (Skin Conditions section).
The rating criteria under DC 7829 are based on the extent of body surface area affected:
| Extent of Involvement | VA Rating |
|---|---|
| Affects less than 5 percent of the entire body or face/neck exposed area | 0% (non-compensable, but service-connected) |
| Affects 5–40 percent of entire body or face/neck exposed area | 10% |
| Affects more than 40 percent of entire body or face/neck exposed area | 30% |
Important notes on DC 7829 rating criteria:
If chloracne has caused permanent scarring — particularly on the face, neck, or other visible areas — the scarring is rated separately under DC 7800 (disfigurement of the head, face, or neck) or DC 7801-7805 (scar codes based on location, depth, and characteristics). This is a critical point: you can be rated for active chloracne under DC 7829 AND separately for scars under DC 7800-7805. These are not duplicative ratings — they represent separate and distinct disabilities.
| Scar DC | Description | Rating Range |
|---|---|---|
| 7800 | Disfigurement of head, face, or neck | 10%–80% (based on number of characteristics of disfigurement) |
| 7801 | Scars, other than head/face/neck, deep, nonlinear | 10%–40% |
| 7802 | Scars, other than head/face/neck, superficial, nonlinear | 0%–10% |
| 7804 | Unstable or painful scar | 10% per qualifying scar area |
The one-year timing requirement is the central evidentiary challenge for most chloracne claims. Here's how to build the evidence:
The strongest evidence is a notation in your service treatment records — any medical visit during or within one year of Vietnam service where a provider noted a skin condition, particularly on the face, neck, or ears. The record doesn't need to say "chloracne" explicitly — notations of "acne," "skin rash," "folliculitis," or "comedones" on the face, neck, or ears during or shortly after Vietnam service can be sufficient to establish timing, with appropriate medical explanation of why these findings are consistent with chloracne.
VA is required to consider lay evidence for conditions that are capable of lay observation — and skin conditions visible to the naked eye qualify. A detailed personal statement explaining:
A buddy statement from a fellow service member, family member, or friend who observed the skin condition during or shortly after your Vietnam service can corroborate the timing and appearance of the condition.
A board-certified dermatologist who reviews your service history and understands the chloracne-dioxin connection can provide a medical opinion establishing that your skin condition was consistent with chloracne at the time of Vietnam service, based on the pattern of exposure, the described appearance and distribution of lesions, and the known timeline of chloracne development after dioxin exposure. This is particularly valuable when STRs don't mention the skin condition but lay evidence establishes timing.
Many Vietnam veterans were diagnosed with "acne" or had their skin condition dismissed without a specific chloracne diagnosis — or had no service medical visits for skin at all. The military medical culture of the era often discouraged seeking treatment for minor skin complaints. Here's how to handle a silent record:
Before concluding that your records are silent, ensure you have requested all available documentation:
Under Jandreau v. Nicholson (2006) and other precedent cases, VA must consider lay evidence for conditions capable of lay observation, including skin conditions. A well-written personal statement that specifically addresses the timing and distribution of your skin condition can carry significant weight when corroborated by buddy statements.
The regulation (38 CFR § 3.309(e)) covers "chloracne or other acneform disease consistent with chloracne." This language is important — your condition does not need to have been diagnosed as chloracne at the time. If you had an acneform skin disease that appeared within one year of Vietnam service, in a distribution consistent with chloracne, and the current medical evidence supports that the condition was consistent with chloracne, the presumptive applies. A dermatologist's opinion on consistency can bridge the diagnostic gap.
For many Vietnam veterans, acute chloracne developed in the late 1960s and early 1970s and has since largely resolved — but not without leaving permanent skin changes. These residuals are separately ratable:
If your active chloracne has resolved but you have residual scarring or other lasting skin changes, you can still be service-connected for chloracne (rated at 0% based on current inactive status) and separately rated for the scarring residuals. The 0% rating for inactive/resolved chloracne still establishes service connection, which provides the foundation for the scar ratings and any future rating increase if chloracne recurs.
A dermatologist's examination documenting the current state of any residual scarring — with specific mention of the size, depth, location, and characteristics of the scars — is essential for the residuals rating to be accurate. Many veterans accept lower ratings because VA examiners conduct cursory examinations of scars. Request a thorough dermatological evaluation with specific documentation of all scar characteristics under DC 7800.
Your DD-214 will show your overseas service dates. Identify the date you left Vietnam (last in-country date). This establishes the start of your one-year manifestation window.
Gather every piece of evidence that can establish that your skin condition appeared within one year of that last in-country date: STRs, private dermatology records, buddy statements, personal statements from family who saw the condition after your return.
Even if chloracne is no longer active, a current evaluation by a board-certified dermatologist documents current status (active or residuals only), the nature and extent of any scarring, and can provide a medical opinion on whether your historical skin condition — based on the described appearance and distribution — was consistent with chloracne from dioxin exposure.
File the claim asserting service connection for chloracne under 38 CFR § 3.309(e). In the remarks section, note: "Veteran requests service connection for chloracne as an Agent Orange presumptive under 38 CFR § 3.309(e). Veteran served in the Republic of Vietnam from [dates]. Skin condition manifested within one year of last date of herbicide exposure." Submit all your evidence with the initial claim.
For additional context on Agent Orange presumptive conditions broadly, see our guide on Agent Orange presumptive conditions. Vietnam veterans with other dioxin-related conditions — including cancers — should also review our guides on Hodgkin's disease VA claims and soft tissue sarcoma VA claims.
Dermatologist Nexus for Chloracne Timing
The one-year timing requirement is the key hurdle for chloracne claims with silent service records. REE Medical's board-certified dermatologists can provide a medical nexus opinion establishing that your historical skin condition was consistent with chloracne from Agent Orange exposure.
Learn About Chloracne Nexus Letters →claim.vet may receive a referral fee if you use this link. Veterans never pay more.
Editorial Standards: Written by Marcus J. Webb, veterans benefits researcher. Verified against current 38 CFR regulations. Last reviewed: July 2026. Not legal advice — for representation, connect with a VA-accredited attorney.
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