Tertiary (late) syphilis. About 15 to 30 percent of people infected with syphilis who don't get treatment will develop complications known as tertiary (late) syphilis. In the late stages, the disease may damage your brain, nerves, eyes, heart, blood vessels, liver, bones and joints.
Signs of dehydration in the elderly can be subtle. Confusion and disorientation. Elderly people can become confused for a variety of reasons; dehydration is one of them. It also comes with physical symptoms that include dizziness, difficulty walking, and disorientation.
Dehydration symptoms vary depending on the severity. Mild symptoms are by far the most common and may include thirst, headache, fatigue, decreased urine output and lightheadedness. More severe dehydration may cause dry skin with poor elasticity, fast heartbeat and shortness of breath. Very severe dehydration may cause confusion, unconsciousness and even death.