Assertion: mitral valve prolapse's symptom | /r/HasProperty | nervousness
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text: Symptoms of chronic magnesium deficiency include anxious behavior, hyperemotionality, apathy, apprehension, poor memory, confusion, anger, nervousness, muscle weakness, fatigue, headaches, insomnia, light-headedness, dizziness, nervous fits, the feeling of a lump in the throat, impaired breathing, muscle cramps (including leg cramps), a tingling or pricking or creeping feeling on the skin, rapid pulse, chest pain, palpitations, and abnormal heart rhythm.