Scleroderma

Scleroderma is derived from the Greek words skleros (hard or indurated) and derma (skin)
The American College of Rheumatology (ACR) criteria for the classification of systemic sclerosis require one major criterion or two minor criteria, as follows:

•Major criterion: Proximal scleroderma is characterized by symmetric thickening, tightening, and induration of the skin of the fingers and the skin that is proximal to the metacarpophalangeal or metatarsophalangeal joints. These changes may affect the entire extremity, face, neck, and trunk (thorax and abdomen; see Images 1-2).
•Minor criteria
◦Sclerodactyly is characterized by thickening, induration, and tightening of the skin, limited to only the fingers.
◦Digital pitting scars or a loss of substance from the finger pad: As a result of ischemia, depressed areas of the fingertips or a loss of digital pad tissue occurs.
◦Bibasilar pulmonary fibrosis includes a bilateral reticular pattern of linear or lineonodular densities most pronounced in basilar portions of the lungs on standard chest roentgenography. These densities may assume the appearance of diffuse mottling or a honeycomb lung and are not attributable to primary lung disease.
Other entities that may also have Acro-Osteolysis include: Psoriatic arthritis, Reiter's disease, frost bite and Leprosy.