I am 72 yrs old and I have been taking Pravastatin, Hydralazine, Valsartan, for my high blood pressure for years. I also take glimepiride for my diabetes, also for years. Since I have been on these medications my hair has fallen off, my nails break lengthwise and they have ridges on the surface of both hands and feet and i have all kinds of skin problems. Are my meds causing these problems?