Some of the other causes include: 1  Lung infections, such as pneumonia and tuberculosis. 2  Other diseases such as systemic lupus erythematosus (lupus), rheumatoid arthritis, cancer, liver diseases, and pulmonary embolism.3  Chest injuries.4  Drug reactions.ome of the other causes include: 1  Lung infections, such as pneumonia and tuberculosis. 2  Other diseases such as systemic lupus erythematosus (lupus), rheumatoid arthritis, cancer, liver diseases, and pulmonary embolism. 3  Chest injuries. 4  Drug reactions.
The definition of a patch is a small area that's different from what's around it. An example of a patch is small area of grass in the middle of a parking lot. An example of a patch is a red wine stain on white carpet. Patch means a piece of material used to cover, fix or protect.
Patchwork is a larger piece of fabric that is created when smaller pieces of fabric, often called patches, are sewn together. Patchwork can be created by joining random or identical pieces of fabric into one large piece, or by first sewing fabrics into smaller sections, and then joining the sections.