Hello, It seems to me that you are suffering from hyperhidrosis. Hyperhidrosis is a medical condition in which a person sweats excessively and unpredictably. Sweating helps the body stay cool. In most cases, it is perfectly natural. People sweat more in warm temperatures, when they exercise, or in response to situations that make them nervous, angry, embarrassed, or afraid. You may be suffering from primary or secondary hyperhidrosis. The later requires identification and treatment of an underlying condition that might be responsible for the secondary hyperhidrosis. Where as the second requires general measures for treatment of hyperhidrosis. In order to treat this, you may require antiperspirants (unfortunately most are used only under the armpit). Your doctor maybe required to write you are script for anticholinergics drugs, such as glycopyrrolate (Robinul, Robinul-Forte), which help to prevent the stimulation of sweat glands. There are other treatment options that can be discussed with your doctor. Ones this over sweating is controlled, you may then be free to use the patches without them falling off and hence the pain due fibromyalgia maybe controlled. Also note that, if fentanyl is effective to control your pain, it can also be effective as oral regimen. Do ask your doctor for alternative route of administration of fentanyl. Hope this helps