It feels like you sleep a lot less than you really do. The causes depend on whether you have primary insomnia or secondary insomnia, also called comorbid insomnia because it develops as a result ...

Vertigo is a sensation of spinning and feeling off balance and dizzy. The causes also differ. Dizziness can result from a drop in blood pressure, medications you take, a vision problem ...

Chills have many possible causes, including health conditions, being in a cold environment, and a reaction to medications. No matter the cause, chills serve one purpose: to raise your core body ...

Diabetes mellitus is a metabolic disease that causes high blood sugar. Your body either doesn’t make enough insulin or can’t effectively use the insulin it makes. The hormone insulin moves ...

Hyperthyroidism occurs when the thyroid overproduces thyroid hormones. This can happen due to inflammation in the thyroid, called thyroiditis, which causes the thyroid to create excess hormones.

The US National Institutes of Health lists the most common causes are gastroenteritis (inflammation of the stomach intestine) and nonspecific abdominal pain, followed by cholelithiasis (a condition ...

Some common causes of abdominal pain and diarrhea include food sensitivities, bacterial or viral infections, and medication or alcohol use. Treatment can depend on the cause. Diarrhea may be acute ...