This can cause nausea and vomiting, vertigo, headaches, lethargy, and overall malaise. Symptoms of SAS include nausea and vomiting, vertigo, headaches, lethargy, and overall malaise. Other non-specific systemic effects such as malaise and lethargy are also common. Symptoms may include diarrhea, headache, nausea and vomiting, dizziness, tachycardia, malaise, and myalgia. These symptoms include fever, headache, malaise, rash and fatigue. Very occasionally nausea, vomiting, malaise or headache may occur. The main symptoms are diarrhoea, followed by nausea, vomiting, fever, malaise and abdominal pain. In tricyclics, discontinuation syndrome symptoms include anxiety, insomnia, headache, nausea, malaise, or motor disturbance. Instead, they may primarily experience prolonged fever, fatigue, malaise and body pains. This includes fever, headache, fatigue, and general malaise. The initial symptoms of acute carbon monoxide poisoning include headache, nausea, malaise, and fatigue. Some symptoms include fever, myalgia, malaise, and edema. These symptoms include fatigue, malaise, and visual disturbances. Initial symptoms include restlessness, agitation, malaise, or a fixed stare. Rare reports have been made of ranitidine causing malaise, dizziness, somnolence, insomnia, and vertigo.