What is atrophoderma of Pasini and Pierini?
Atrophoderma of Pasini and Pierini is a rare form of dermal atrophy characterised by asymptomatic slightly depressed areas with a well-defined ‘cliff-drop’ edge.
Atrophoderma of Pasini and Pierini
Who gets atrophoderma of Pasini and Pierini?
Atrophoderma of Pasini and Pierini is rarely reported with only about 100 cases in the medical literature.
Atrophoderma of Pasini and Pierini usually first appears in adolescence or early adulthood (second and third decade). Onset in infancy, childhood, and late adult-life has been reported, as has congenital presentation.
There is a strong female predominance (2-6:1) and most reports have been in Caucasians. Familial cases have been described.
Atrophoderma of Pierini and Pasini in an infant*
*First two images are reproduced with permission from John Wiley and Sons. Liu S Oliver F, Agnew K. An unusual infantile rash. Clin Exp Dermatol. 2018;43:835–8. doi:10.1111/ced.13541
What causes atrophoderma of Pasini and Pierini?
Atrophoderma of Pasini and Pierini is usually regarded as a variant of morphoea (localised scleroderma) due to overlapping clinical and histological features and the association in some cases with typical morphoea.
A subset of patients with atrophoderma of Pasini and Pierini have antibodies against Borrelia burgdorferi, and treatment with doxycycline has been reported to improve the skin lesions in some cases with IgM antibodies.
What are the clinical features of atrophoderma of Pasini and Pierini?
- Asymptomatic depressed areas usually found on the trunk, particularly the lower back
- Lesions may be solitary or multiple, oval or round, 1–2 cm (range up to 15 cm) in diameter, 1–8 mm deep
- Described as a ‘footprints-in-the-snow’, Swiss-cheese, or ‘moth-eaten’ appearance
- No preceding signs of inflammation
- Pattern of lesions may be unilateral, bilateral and symmetrical, linear, zosteriform, or Blaschkoid [see Blaschko lines]
- Overlying skin may be hyperpigmented, hypopigmented, or normal in colour
- Surface skin is not wrinkled and induration is not palpable
- ‘Cliff-drop’ edge sharply demarcates the lesion from the surrounding normal skin — best observed with lighting from an angle
Atrophoderma of Pierini and Pasini
Dermoscopy of atrophoderma of Pasini and Pierini
- Prominent pigment network — wavy pattern, irregularly distributed
- Regular perifollicular white areas
- Retention of hairs
How do clinical features vary in differing types of skin?
Lesions of atrophoderma of Pasini and Pierini are usually described as being hyperpigmented, but in skin of colour lesions are often hypopigmented or skin-coloured.
What are the complications of atrophoderma of Pasini and Pierini?
Atrophoderma of Pasini and Pierini can be associated with morphoea or systemic sclerosis. Sclerodermatous changes, detected clinically as areas of induration, may develop within pre-existing areas of dermal atrophy with histology resembling morphoea.
How is atrophoderma of Pasini and Pierini diagnosed?
Atrophoderma of Pasini and Pierini should be considered on the history and clinical features. Dermal atrophy can be demonstrated on ultrasound. In endemic areas, serology for B. burgdorferi is recommended.
If a skin biopsy is required, it should be taken as a deep wedge across the border to include both involved and uninvolved skin down into the subcutis as the changes on histology are subtle:
- Normal epidermis with basal layer hyperpigmentation
- Dermal atrophy
- Normal collagen and elastic fibres
- Perivascular lymphocytic infiltrate
- Absent or mild deep dermal sclerosis.
What is the differential diagnosis for atrophoderma of Pasini and Pierini?
- Anetoderma
- Morphoea, particularly the linear atrophoderma of Moulin form
- Postinflammatory hyperpigmentation
What is the treatment for atrophoderma of Pasini and Pierini?
There is no recognised treatment for atrophoderma of Pasini and Pierini. Cases associated with B burgdorferi antibodies may improve with doxycycline. Hydroxychloroquine and methotrexate have been reported to be co-incidentally effective in rare cases with associated disorders such as lupus erythematosus or psoriasis. Treatment with a Q-switched alexandrite laser (755nm) may help fade the hyperpigmentation.
What is the outcome for atrophoderma of Pasini and Pierini?
Atrophoderma of Pasini and Pierini may remain unchanged or slowly progress over years with increasing size and numbers of lesions which may coalesce. Eventually it usually stabilises. Characteristically lesions do not involute, but spontaneous improvement has been reported.