Low potassium levels, also known as hypokalemia, can manifest with various symptoms. Common signs of low potassium include muscle weakness or cramps, fatigue, constipation, abnormal heart rhythm, palpitations, tingling or numbness, frequent urination, excessive thirst, digestive issues, and mood changes. However, it's important to remember that these symptoms can also be caused by other factors, so it's essential to consult a healthcare professional for an accurate diagnosis.