HI. My mother has been suffering from severe night sweats, extreme fatigue, and a dry cough. She experienced this for several months last winter also. At that time her dr did blood work to check her thyroid, but all was normal. Her doctor also checked something with her lymph nodes, but that was also normal. She did show a higher than normal platelet count. My mom is 66 years old. She has osteoporosis and a b12 deficiency but otherwise she has always been very healthy. Any thoughts or ideas would be appreciated.