Atrophoderma of Pasini and Pierini is a rare, cutaneous condition that causes dermal atrophy. Pasini described it in 1923 under the name of ”progressive idiopathic atrophoderma.” Pierini and Vivoli later further described it in 1936, suggesting its possible link to morphea. It presents as single or multiple, sharply demarcated, hyperpigmented, non-indurated patches with no obvious inflammatory signs.
The cause of atrophoderma of Pasini and Pierini remains unknown. Some authors have linked it to infection with Borrelia burgdorferi  such as Buechner and Rufi who studied the sera of 26 patients with typical lesions. 53% of them had positive immunoglobulin G antibodies against B. burgdorferi, while 14% of control subjects demonstrated positive IgG antibodies. No immunoglobulin M antibodies were found. Some cases of familial atrophoderma of Pasini and Pierini have been described; however, a genetic link has not been confirmed. 
A neurogenic cause has been suggested because of the apparent zosteriform distribution of lesions in some cases, but definitive evidence is lacking.  There is growing evidence to consider the atrophoderma of Pasini and Pierini as a manifestation of the spectrum of localized scleroderma. , 
Various classification schemes have been proposed. The first was suggested in 1995 by Paterson and classifies morphea into five groups: plaque, generalized, bullous, linear, and deep. Atrophoderma of Pasini and Pierini was included within the spectrum of plaque-type morphea along with Morphea en plaque, guttate morphea, keloidal morphea, and lichen sclerosis et atrophicus. Generalized morphea was defined as involving two or more body areas. Bullous or linear morphea included linear morphea of the extremities, morphea en coup de sabre, and progressive hemiatrophy. Deep morphea in this system included morphea profunda, subcutaneous morphea, eosinophilic fasciitis, and pansclerotic morphea.
Cases of "burnt-like" presentation of morphea may be atrophic and histologically similar to atrophoderma of Pasini and Pierini. Both morphea plaques and atrophoderma of Pasini and Pierini lesions may occur in the same patient, with atrophic patches appearing in the previously normal skin. In one case report  the authors described a patient with typical atrophoderma of Pasini and Pierini who developed progressive systemic sclerosis.
Atrophoderma of Pasini and Pierini is a rare disease. Less than 100 cases have been reported in the literature. It is usually seen in the second or third decade of life. However, the onset of the disease has also been described in younger and elderly patients. Cases of congenital atrophoderma have also been reported.  Atrophoderma of Pasini and Pierini has a marked female preponderance, with a female to male patient ratio of 6:1. The condition is more frequently reported in Caucasian Europeans.
Microscopic findings in the atrophoderma of Pasini and Pierini are not striking. In many cases, no alterations can be observed in the epidermis, but it may show slight atrophy with flattened rete ridges. The most common finding is a quantitative decrease in the thickness of the affected dermis. Collagen changes can include atrophy, sclerosis, fragmentation and hyalinization  Elastic fiber changes may be variable; reduction and fragmentation similar to that of anetoderma cases have been reported  Dilatation of superficial blood vessels is noted in some reports associated with a sparse, perivascular round-cell inflammatory infiltrate. The sweat glands, pilosebaceous units, and appendages appear normal.
From a clinical perspective, the condition is asymptomatic and progresses insidiously over time. The lesions first appear on the trunk (commonly on the back) and progress to involve chest, arms, and abdomen. It may cause pain, pruritus or even paraesthesia.
It is characterized by single or multiple  irregularly round patches, varying in size from a few millimeters to several centimeters. These patches are slightly depressed (below the level of surrounding skin) with a sharp edge, giving a "cliff-drop" border appearance. An erythematous or "lilac-ring" border, as seen in morphea, does not occur in atrophoderma of Pasini and Pierini. The lesions are usually hyperpigmented but Saleh et al.  have showed in a retrospective study of 16 Lebanese patients that the lesions could be hypopigmented (56%) and skin-colored (25%). Therefore, they may be hypopigmented as well.
Lack of features of inflammation is a characteristic finding. The lesions do not exhibit sclerosis or induration on palpation. Surrounding skin appears normal and does not show any changes. The lesions are often bilateral; however, unilateral zosteriform or blaschkoid presentation has been documented. 
An enzyme-linked immunosorbent assay should be performed to detect anti–B. burgdorferi antibodies.
The thickness of the lesion and surrounding skin may be measured with magnetic resonance imaging or 13-MHz B-mode ultrasonography, to document dermal atrophy of lesional area. However, it is often not needed.
Histopathological changes are minimal and show the reduced volume of dermal tissue as compared to normal skin. Some notable findings include varying degrees of homogenization and clumping of collagen in the mid- and reticular dermis, interstitial edema, and a mild perivascular infiltrate consisting of lymphocytes and histiocytes. The sweat glands, pilosebaceous units, and appendages appear normal. Overlying epidermis is usually normal but may show slight atrophy with flattened rete ridges.
Unfortunately, no treatment is consistently effective for atrophoderma of Pasini and Pierini.
Patients with a positive B. burgdorferi antibody titer have shown some response with tetracyclines. Doxycycline in a dose of 200 mg/day is reported to prevent the appearance of new lesions. However, the results of treatment with antibiotics in a patient with positive B. burgdorferi are inconclusive. In retrospective sera of 25 patients treated with either oral penicillin (2 million IU per day) or oral tetracycline (500 mg three times per day ) for 2 to 3 weeks showed clinical improvement in 20 patients. The same study demonstrated no progressive disease in four of six patients who did not receive treatment 
The therapeutical approach also includes topical corticosteroids and antimalarials, including hydroxychloroquine which seems to show a good response in cases associated with lupus. Furthermore, topical treatments using calcineurin inhibitors were also reported although with variable responses .
Treatment with a Q-switched Alexandrite laser has also been reported to result in the clinical improvement of hyperpigmented lesions. 
The disease tends to be progressive over 10 to 20 years. Eventually, no further progression occurs, yet existing lesions characteristically do not involute. No definite progression to systemic sclerosis had been observed until Bisaccia et al.  in 1982, which reported the case of a 42-year-old woman with typical lesions of the atrophoderma of Pasini and Pierini on the back. The patient developed progressive systemic sclerosis with Raynaud's phenomenon, sclerodactyly, and pulmonary fibrosis.
Atrophoderma of Pasini and Pierini is a rare disease that most likely will not be encountered by the primary care provider or nurse practitioner. However, when faced with unknown skin lesions, the best recommendation is to refer the patient to a dermatologist for a definitive diagnosis and then work as a team to provide coordinated follow up. Atrophoderma of Pasini and Pierini has a marked female preponderance, with a female to male patient ratio of 6:1. The condition is more frequently reported in Caucasian Europeans. The disorder may progress in some people but little is known about its long term course.
|||González-Morán A,Martín-López R,Ramos ML,Román C,González-Asensio MP, [Idiopathic atrophoderma of Pasini and Pierini. Study of 4 cases]. Actas dermo-sifiliograficas. 2005 Jun [PubMed PMID: 16476392]|
|||Bassi A,Remaschi G,Difonzo EM,Greco A,Buccoliero AM,Giani T,Facchini F,Cimaz R,de Martino M, Idiopathic congenital atrophoderma of Pasini and Pierini. Archives of disease in childhood. 2015 Dec [PubMed PMID: 26374755]|
|||Arif T,Adil M,Amin SS,Ahmed M, Atrophoderma of Pasini and Pierini in a blaschkoid pattern. Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG. 2017 Jun [PubMed PMID: 28346752]|
|||Ling X,Shi X, Idiopathic atrophoderma of Pasini-Pierini associated with morphea: the same disease spectrum? Giornale italiano di dermatologia e venereologia : organo ufficiale, Societa italiana di dermatologia e sifilografia. 2016 Feb [PubMed PMID: 26373865]|
|||Saleh Z,Abbas O,Dahdah MJ,Kibbi AG,Zaynoun S,Ghosn S, Atrophoderma of Pasini and Pierini: a clinical and histopathological study. Journal of cutaneous pathology. 2008 Dec [PubMed PMID: 18616761]|
|||Vieira-Damiani G,Lage D,Christofoletti Daldon PÉ,Tibúrcio Alves CR,Cintra ML,Metze K,Adur J,Pelegati VB,Carvalho HF,Cesar CL, Idiopathic atrophoderma of Pasini and Pierini: A case study of collagen and elastin texture by multiphoton microscopy. Journal of the American Academy of Dermatology. 2017 Nov [PubMed PMID: 28389037]|
|||Buechner SA,Rufli T, Atrophoderma of Pasini and Pierini. Clinical and histopathologic findings and antibodies to Borrelia burgdorferi in thirty-four patients. Journal of the American Academy of Dermatology. 1994 Mar [PubMed PMID: 8113457]|
|||Pope E,Laxer RM, Diagnosis and management of morphea and lichen sclerosus and atrophicus in children. Pediatric clinics of North America. 2014 Apr [PubMed PMID: 24636648]|
|||Arpey CJ,Patel DS,Stone MS,Qiang-Shao J,Moore KC, Treatment of atrophoderma of Pasini and Pierini-associated hyperpigmentation with the Q-switched alexandrite laser: a clinical, histologic, and ultrastructural appraisal. Lasers in surgery and medicine. 2000 [PubMed PMID: 11013382]|
|||Jablonska S,Blaszczyk M, Scleroderma overlap syndromes. Advances in experimental medicine and biology. 1999 [PubMed PMID: 10599327]|