Hypoventilation may be caused by an uneven distribution of inspired air (as in bronchitis), obesity, neuromuscular or skeletal disease affecting the thorax, decreased response of the respiratory center to carbon dioxide, or a reduced amount of functional lung tissue, as in atelectasis, emphysema, and pleural effusion.
Seborrheic Keratosis Causes Wart Like Skin Growths. Seborrheic keratosis causes wart like skin growths to appear on just about every body thatâs over age 40. Although they resemble skin cancer, these keratosis tumors are benign.
Whatâs causing your wart like skin condition is the overgrowth of keratin, a fibrous protein normally present in top layer of your skin. As it builds up, it causes a raised dark brown tumor, that can be rough like a wart. Why wart like seborrheic keratosis occurs isnât known. What is known is that your chances of developing at least one of these skin growths is very likely. And your head, neck and back are frequent sites of their growth. What seborrheic keratosis looks like is: 1  shape ~ round or oval. 2  solo or cluster of growths.