Our patient was considered to have anti-laminin gamma-1
pemphigoid of vesicular pemphigoid type, which has been
seen in 10% of patients.
1
Bullous disease in our patient might
have been induced and aggravated by scabies for following
reasons: (i) the scabietic lesion on the left scapular area
already existed at the first visit; (ii) the patient originally showed
eczematous lesions; and (iii) ivermectin suppressed both bul-
lous and keratotic lesions. However, scabies infestation might
have merely precipitated pre-existing bullous disease in our
case, as was suggested to have occurred through metal
allergy in a previous case.
3
There have been some bullous scabies cases with BP-like
bullous lesions and positive direct immunofluorescence results.
Therefore, if ELISA or immunoblotting were performed, inci-
dence of autoimmune bullous diseases with scabies would
become higher. We found only one case of true BP
2
and one
case of true anti-laminin gamma-1 pemphigoid (Japanese pub-
lished work).
4
Thus, our patient is the first case of anti-laminin
gamma-1 pemphigoid with scabies in the English-language
published work.
Two mechanisms for production of BP autoantibodies in
patients with scabies were speculated;
5
lytic secretion of sca-
bies mites could injure BMZ and release skin antigens, and
mites could cross-react with skin antigens. Our patient might
support the former hypothesis.
ACKNOWLEDGMENTS: We gratefully appreciate the secre-
tarial work of Ms Tomoko Tashima. We thank the patient for his partici-
pation.
CONFLICT OF INTEREST: The authors have no conflict of
interest.
Shigeruko IIJIMA,
1
Yukiko OKAZAKI,
1
Shinya WATANABE,
1
Daisuke TSURUTA,
2
Chiharu TATEISHI,
2
Norito ISHII,
3
Chika OHATA,
3
Takashi HASHIMOTO
3
1
Department of Dermatology, Mito Saiseikai General Hospital, Ibaraki,
2
Department of Dermatology, Osaka City University Graduate School of
Medicine, Osaka, and
3
Department of Dermatology, Kurume University
School of Medicine, and Kurume University Institute of Cutaneous Cell
Biology, Fukuoka, Japan
doi: 10.1111/1346-8138.13020
REFERENCES
1 Dainichi T, Kurono S, Ohyama B et al. Anti-laminin gamma-1 pem-
phigoid. Proc Natl Acad Sci U S A 2009; 106: 2800–2805.
2 Konishi N, Suzuki K, Tokura Y, Hashimoto T, Takigawa M. Bullous
eruption associated with scabies: evidence for scabetic induction
of true bullous pemphigoid. Acta Derm Venereol 2000; 80: 281–
283.
3 Baican A, Chiriac G, Baican C et al. Metal sensitization precipitates
skin blistering in epidermolysis bullosa acquisita. J Dermatol 2010;
37: 280–282.
4 Ogata M, Misago N, Inoue T et al. A case of anti-p200 pemphigoid
suspected of the relation of scabies. Nishinihon J Dermatol 2006; 68:
375–378. (in Japanese).
5 Ostlere LS, Harris D, Rustin MH. Scabies associated with a bullous
pemphigoid-like eruption. Br J Dermatol 1993; 128: 217–219.
Immediate allergy due to raw garlic (Allium sativum L.)
Dear Editor,
Garlic is used worldwide not only as a foodstuff but also as a
seasoning agent and nutritional supplement.
A 31-year-old housewife visited our clinic after two episodes
of immediate hypersensitivity reactions after ingesting meals
that included raw garlic. During the first episode, wheals
appeared after she ingested raw, grated garlic along with meat
and vegetables. In the second episode, wheals appeared after
ingesting raw garlic and gochujang (Korean red chili paste).
She had suffered from atopic dermatitis, but had no history of
food allergy, and had no occupational exposure to garlic.
Prick and scratch tests results were negative for gochujang
and cooked garlic, whereas only edible raw garlic showed a
positive reaction (6 mm 9 6 mm) with the scratch test. The
wheal induced by 1% of histamine dihydrochloride (Wako Pure
Chemical Industries, Osaka, Japan) as the positive control with
the scratch test was 5 mm 9 5 mm. Scratch tests performed
on three controls using raw garlic were all negative and the
gochujang brought in by the patient did not contain any garlic.
We performed skin-prick testing using cooked beef, cooked
pork and raw Japanese radish. She showed negative reactions
for these foodstuffs. We obtained an extract by adding 1 mL of
distilled water to grated garlic and filtering it through gauze.
We performed sodium dodecylsulfate polyacrylamide gel
electrophoresis with the extract of raw garlic and transferred it
to nitrocellulose membrane by diffusion; sera from both the
patient and the six controls were added and incubated. In
immunoblotting assay, we identified a protein band in the
75-kDa region (Fig. 1; lanes 4, 5 and 8). The immunoglobulin
(Ig)E-binding protein band was almost undetectable when
using control sera (lanes 3 and 7). On the inhibition immuno-
blotting assay using the extract without 2-mercaptoethanol, the
IgE-binding signal of the protein band in the 75-kDa region dis-
appeared (Fig. 1; lane 9). From these results, we considered
that the protein band in the 75-kDa region was one of the
causative antigens in garlic allergy. We plan to carry out immu-
noblotting assay and enzyme-linked immunoassay using the
cooked (heated) garlic in future.
Correspondence: Akiko Yagami, M.D., Ph.D., Department of Dermatology, Fujita Health University School of Medicine, 1-98 Dengakugakubo,
Kutsukakecho Toyoake, Aichi 470-1192, Japan. Email: ayagami@fujita-hu.ac.jp
1026 © 2015 Japanese Dermatological Association
Letters to the Editor