Soot tattoo

Skin marking caused by needle injection

Soot tattoos are carbon stains made by inserting soot into the dermis layer of the skin via a drug injection. A drug user may try to sterilize the tip of a needle with a flame, leaving a small amount of soot on the outside of the needle.^[1] An injection can carry this residual carbon into the skin, leaving a mark known as a soot tattoo.^[2]

Soot tattoos are an accidental cutaneous condition. This is distinct from the intentional practice of a tattoo artist creating a tattoo with a design in the skin using soot as a pigment in tattoo ink.

References

^ MD, Steven B. Karch; Drummer, Olaf; FFFLM, Steven B. Karch MD (2001-12-26). Karch's Pathology of Drug Abuse. CRC Press. p. 395. ISBN 978-1-4200-4211-5.
^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.

Cutaneous keratosis, ulcer, atrophy, and necrobiosis

Epidermal thickening

keratoderma: Keratoderma climactericum
Paraneoplastic keratoderma
- Acrokeratosis paraneoplastica of Bazex
Aquagenic keratoderma
Drug-induced keratoderma
psoriasis
- Keratoderma blennorrhagicum

Necrobiosis/granuloma

Necrobiotic/palisading	Granuloma annulare Perforating Generalized Subcutaneous Granuloma annulare in HIV disease Localized granuloma annulare Patch-type granuloma annulare Necrobiosis lipoidica Annular elastolytic giant-cell granuloma Granuloma multiforme Necrobiotic xanthogranuloma Palisaded neutrophilic and granulomatous dermatitis Rheumatoid nodulosis Interstitial granulomatous dermatitis/Interstitial granulomatous drug reaction
Foreign body granuloma	Beryllium granuloma Mercury granuloma Silica granuloma Silicone granuloma Zirconium granuloma Soot tattoo Tattoo Carbon stain
Other/ungrouped	eosinophilic dermatosis Granuloma faciale

Dermis/
localized CTD

Cutaneous lupus erythematosus	chronic: Discoid Panniculitis subacute: Neonatal ungrouped: Chilblain Lupus erythematosus–lichen planus overlap syndrome Tumid Verrucous Rowell's syndrome
Scleroderma/ Morphea	Localized scleroderma Localized morphea Morphea–lichen sclerosus et atrophicus overlap Generalized morphea Atrophoderma of Pasini and Pierini Pansclerotic morphea Morphea profunda Linear scleroderma
Atrophic/ atrophoderma	Lichen sclerosus Anetoderma Schweninger–Buzzi anetoderma Jadassohn–Pellizzari anetoderma Atrophoderma of Pasini and Pierini Acrodermatitis chronica atrophicans Semicircular lipoatrophy Follicular atrophoderma Linear atrophoderma of Moulin Atrophia maculosa varioliformis cutis
Perforating	Kyrle disease Reactive perforating collagenosis Elastosis perforans serpiginosa Perforating folliculitis Acquired perforating dermatosis
Skin ulcer	Pyoderma gangrenosum
Other	Calcinosis cutis Sclerodactyly Poikiloderma vasculare atrophicans Ainhum/Pseudo-ainhum