Benadryl (diphenhydramine) is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Benadryl is used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms. Benadryl is also used to treat motion sickness, to induce sleep, and to treat certain symptoms of Parkinson's disease.
Diabetic headaches have several causes. Photo Credit Jupiterimages/Comstock/Getty Images. Diabetes impairs your body's ability to produce or use insulin, which regulates blood glucose levels and generates energy. In type I diabetes, the pancreas does not produce insulin. Without insulin, too much sugar remains in the blood and becomes toxic, leading to fatigue, neuropathy, headaches, blindness and death if left untreated.
Complications of diabetes include: 1  Heart Disease â People with diabetes have a higher risk for heart attack and stroke. 2  Eye Complications â People with diabetes have a higher risk of blindness and other vision problems. 3  Kidney Disease â Diabetes can damage the kidneys and may lead to kidney failure. Foot Problems â Nerve damage, infections of the feet, and problems with blood flow to the feet can be caused by diabetes. 2  Skin Complications â Diabetes can cause skin problems, such as infections, sores, and itching. 3  Skin problems are sometimes a first sign that someone has diabetes.