Don't excessively restrict activity. If other symptoms occur with increased fatigue, then it's important to talk with the doctor or nurse. The first question you should ask is whether help from medical professionals is needed because of an emergency that goes along with feeling tired. The problems that need immediate help are ones that indicate an unexpected physical problem. Dizziness and feeling a loss of balance can happen when walking or getting out of bed or going from a standing to a sitting position.
Dizziness can also happen without moving or changing one's position.
This symptom can happen to anyone occasionally. When it is severe and frequent, you should get medical help. Falling, followed by an injury, bleeding, mental confusion or unconsciousness . Report all bad falls so the doctor or nurse can judge what caused the falling, and what follow-up is needed. Sometimes they'll recommend using other measures for prevention.