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2003:69:5;343-344
PMID: 17642934

Juvenile dermatomyositis associated with lipodystrophy

NT Irene, B Parveen, OH Hema, V Rajagopalan
 Department of Dermatology, Government Royapettah Hospital, Kilpauk Medical College, Chennai, India

Correspondence Address:
B Parveen
Department of Dermatology, Government Royapettah Hospital, Kilpauk Medical College, Chennai - 600014
India
How to cite this article:
Irene N T, Parveen B, Hema O H, Rajagopalan V. Juvenile dermatomyositis associated with lipodystrophy. Indian J Dermatol Venereol Leprol 2003;69:343-344
Copyright: (C)2003 Indian Journal of Dermatology, Venereology, and Leprology

Abstract

Lipodystrophy and associated metabolic abnormalities are being increasingly recognized as complications of juvenile dermatomyositis. We report one such case.
Keywords: Juvenile dermatomyositis, Lipodystrophy

INTRODUCTION

Dermatomyositis is a disease in which characteristic patterns of autoimmune inflammatory injury occur in striated muscle and skin.[1] Dermatomyositis also occurs in childhood and has certain characteristic presentations. Juvenile dermatomyositis is frequently associated with calcinosis cutis.[2] Lipodystrophy and associated metabolic abnormalities are being increasingly recognized as complications of juvenile dermatomyositis.[3] We report a case of juvenile dermatomyositis associated with lipodystrophy and hypertriglyceridemia.

CASE REPORT

A 10-year-old girl presented with a history of fever, joint pains and pigmentation over the eyelids [Figure - 1] of nine months′ duration. On examination, she was thinly built with a wasted appearance over the chest and limbs but with a protuberant abdomen. The muscle outlines and veins were clearly visible over the limbs, indicating a loss of subcutaneous fat [Figure - 2]. Both the eyelids and the ears were erythematous and hyperpigmented. Scaling and hyperpigmentation was present over the scalp. The skin could be easily pinched. Skin colored papules were present over the metacarpal and interphalangeal joints over the dorsum of both hands. Multiple subcutaneous nodules were present around the elbow and knee joints [Figure - 3]. They were mobile and tender and extruded a whitish pasty material. The hair, mucosa, nails and palms and soles were normal. Investigations showed a normal hemogram with normal levels of serum calcium and serum uric acid. Muscle enzymes such as CPK, LDH and aldolase were within normal limits. ANA was negative. Lipid profile revealed a raised triglyceride level of 250 mg/dl as compared to the normal value of below 200 mg/dl.

X-rays of the elbow and knee joints showed extra-articular calcifications. X-ray of the chest and sonogram of the abdomen were normal.

Histopathological examination of a subcutaneous nodule showed calcium deposits in the dermis. Histopathology of the deltoid muscle showed a loss of transverse muscle fibres with hyalinization of the sarcoplasm and sparse lymphocytic infiltrate. In one area there was no subcutaneous fat, with muscle fibres being arranged directly below the dermis.

DISCUSSION

Calcinosis cutis occurs more frequently in childhood or juvenile dermatomyositis than in the adult type. Clinically our patient had hyperpigmentation over the eyelids, Gottron′s papules and calcinosis cutis.

These features were consistent with juvenile dermatomyositis. Though her muscle enzyme studies were normal, she had muscle weakness and pain, and histopathology also showed involvement of muscle. Lipodystrophy was clinically evident, with loss of subcutaneous fat over the limbs and chest. Histopathology showed loss of subcutaneous fat in some areas. Metabolic abnormalities were in the form of raised triglyceride levels and LDL cholesterol.

In a study of twenty patients with juvenile dermatomyositis, Huemer et al found that there was an increased incidence of lipodystrophy and metabolic abnormalities. Twenty five percent of the children studied showed lipodystrophy and 50% had hypertriglyceridemia.[3] Juvenile dermatomyositis has also been reported with partial lipodystrophy.[4] Our patient is yet another evidence of lipodystrophy with triglyceridemia which is being increasingly reported in children with dermatomyositis.

References
1.
Sontheimer RD. Dermatomyositis. In: Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith L, Katz SI, editors. Fitzpatrick's Dermatology in general medicine. 5th ed. Philadelphia: McGraw-Hill; 1999. p. 2009-22.
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2.
Rowell NR, Goodfield MJ. The connective tissue diseases. In: Champion RH, Burton JL, Ebling FJG, editors. Textbook of dermatology. 6th ed. London: Blackwell Scientific; 1998. p. 2437-575.
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3.
Huemer C, Kitson H, et al. Lipodystrophy in patients with juvenile dermatokyositis - evaluation of clinical and metabolic abnormalities. J Rheumatol 2001;28:610.
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4.
Kevanagh GM, Coloco B, Kennedy CT. Juvenile dermatomyositis associated with partial lipoatrophy. J Am Acad Dermatol 1993;28:348-51.
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