Tingling on surface of skin, sore joints, leg cramps. Started ta...

Tingling on surface of skin, sore joints, leg cramps. Started taking potassium and the cramps went away. Used to walk my dogs several miles a day after work. No longer have the energy. Tired after a good night's sleep. Loss of motivation. Also experiencing ringing in my ears, headaches and dizziness. I get vertigo just riding my mower in wide circles around trees. My ankles never have been swollen. Now they are swollen on a regular basis. My feet and legs are painful for no reason.