Dr. Norman P Knowlton M.D.

Do I Have a Sleep Disorder?Sleep normally follows a pattern that alternates between rapid eye movement (REM) sleep and non-REM sleep. Changes in this pattern affect sleep resulting in disorders that may lead to tiredness and lack of concentration and attention during day time. Sleep can be disrupted...

The swelling of the feet, legs, and ankles is also known as peripheral edema. This refers to a condition where there is an excessive accumulation of fluid in these parts of the body. It is not a painful condition unless the underlying cause for it is an injury to that area. However, it is a very...

New research shows that a pregnant mother drinking up to two glasses of alcohol may not harm the children. About 11,500 mothers and their children participated in this study. Researchers collected data regarding the drinking habits of the mothers when the kids were about 9 months old. When the...

Fungal infections are common in hair, nails, and surfaces of the skin. Nail fungus infects toe and finger nails and is more common in toe nails when compared to fingers. Also referred to as onchomyosis, this condition may become very painful affecting the whole nail. It usually starts as a small...

IntroductionA decrease in the number of white blood cells (WBCs) is referred to as leukopenia. There are several causes for leukopenia. It may be due to certain drugs, cancer, radiation and chemotherapy for cancer, stem cell transplant, surgery, steroids, or autoimmune disorders. The immune system...

What is shivering?Exposure to cold or rapid shifts in temperature usually causes uncontrollable shivering. However, many other possible causes can cause shivering or chills. An uncontrollable shivering that persists for a longer time may indicate an underlying illness that requires immediate medical...