Since last three-four months my wife urinates 3-4 time during night and on few occasions she had a leakage on bed in very small quantity, and she wakes up after that. This leakage is not too frequently, it happens once in 10 to 15 days. She had undergone mastectomy in course of cancer treatment, had full course of chemo therapy and radiation treatment also. She has cronic asthma for last 15 years.