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What is Wolff-Parkinson-White Syndrome? Wolff-Parkinson-White syndrome is characterised by attacks of rapid heart rate (tachycardia), which is shown in an electrocardiogram (ECG). In some people the ECG abnormality may be present without any symptoms such as tachycardia. The heartbeat is regulated by electrical impulses that travel through the atria (upper …

Definition Wells syndrome or Eosinophilic cellulitis is an acute, rare dermatosis of unknown etiology. Eosinophilic cellulitis is reported infrequently in children and is manifested by eosinophil infiltration in the dermis. Eosinophilic cellulitis presents with sudden onset of single or multiple mildly painful or pruritic, erythematous plaques. The lesions are usually …

What is Wilms Tumor? Wilms tumor is a rare kidney cancer that is highly treatable. Most kids with Wilms tumor survive and go on to live normal, healthy lives. Also known as nephroblastoma, Wilms tumor can affect both kidneys, but usually develops in just one. Doctors believe that the tumor …

Definition Whiplash injury is an injury to the soft tissues of the neck caused by forced flexion followed by hyperextension of the neck. Muscles, tendons, and ligaments that surround the bones of the neck are stretched beyond their limits in whiplash injuries. This type of sudden stretching often results in …

Definition Whipple’s disease is a multi-system infectious bacterial disease that interferes with the body’s ability to metabolize fats. Caused by the bacterium Tropheryma whipplei, the disorder can affect any system in the body, including the brain, eyes, heart, joints, and lungs, but usually occurs in the gastrointestinal system. Neurological symptoms …

Overview – West Nile Virus West Nile Virus (WNV) is an infectious disease that first appeared in the United States in 1999. Infected mosquitoes spread the virus that causes it. People who get WNV usually have no symptoms or mild symptoms. The symptoms include fever, headache, body aches, skin rash, …

Overview – Watery Eyes Watery eyes can be completely mystifying. You might expect to tear up when remembering a heart-pulverizing breakup or reading about unlikely animal friendships. But in the middle of the day while just going about your life? Not so much. Unfortunately, there are plenty of reasons your …

Definition Pertussis, also known as whooping cough, is a highly contagious respiratory disease. It is caused by the bacterium Bordetella pertussis. Pertussis is known for uncontrollable, violent coughing which often makes it hard to breathe. After cough fits, someone with pertussis often needs to take deep breaths, which result in …