222 



Purpura Hemorrhagica. 



joints the skin shows cracks which expose a moist reddened 

 wound. In places where the stretching of the skin is the great- 

 est, therefore, especially over the bony protuberances, as well 

 as in the places where it is exposed to outside pressure, excep- 



Fij^. 40. Purpura hemorrhagica. Swelling of the forehead and of the lower chest. 



tionally also in other parts of the body, for instance on the 

 upper lip (Figure 41), the skin becomes insensitive in circum- 

 scribed areas, cold and dry, and takes on a darker color. Soon 

 dry, round portions of skin as large as a dollar or even larger, 

 dark brown and parchment-like are separated and fall off. The 



