Reddened hands can have a variety of causes, including genetic factors, pregnancy hormones and certain drugs and diseases, according to Dr. Ann W. Edmundson, posting on WebMD. Diseases that can be responsible for reddened hands include liver disease, hyperthyroidism and diabetes.
Liver disease can be caused by a variety of illnesses and can result in scar tissue replacing normal liver cells, explains MedicineNet. The most common cause of liver disease is alcohol abuse, but conditions such as cholesterol build-up or lack of bile flow can also lead to the disease. In addition to having reddened hands, those with liver disease can experience symptoms such as weakness, fatigue, nausea and yellow skin.
Hyperthyroidism has a variety of causes, including excess iodine intake, Graves disease and certain tumors, according to MedlinePlus. People with hyperthyroidism commonly experience symptoms such as frequent bowel movements, thyroid nodules, heat intolerance, increased appetite, nervousness and weight loss. Less common symptoms include diarrhea, hair loss, itchy skin and protruding eyes.
Diabetes can have a variety of causes, depending on whether it is type 1, type 2 or gestational diabetes, explains WebMD. Type 1 diabetes is an autoimmune disorder that often begins in childhood and may have genetic causes. Type 2 diabetes is the most common form of diabetes, and those who are obese are at a greater risk of developing it. Gestational diabetes is triggered by pregnancy and can be managed by taking medication and controlling diet and exercise.