Hi there! Thank you for your question. The symptoms mentions are symptoms of nephrotic syndrome. Allow me to explain more. Children with too much protein in their urine, sudden weight gain, and swelling in various body parts could have a condition called nephrotic syndrome. Childhood nephrotic syndrome is also called nephrosis. Nephrotic syndrome happens when tiny structures in the kidneys called glomeruli stop working properly and let too much protein enter the kidneys. In most cases, the cause is not known.

However, a number of conditions can damage the glomeruli and cause nephrotic syndrome. In children, the most common cause is due to minimal change disease. The cause of minimal change disease can be related to infections, tumors, allergic reactions, and overuse of over-the-counter medications like ibuprofen and acetaminophen. Most children outgrow minimal change disease by the time they are in their teens.

Usually, young children between the ages of 1 ½ and 5, although children of all ages and even adults can get it. It happens twice as often in boys than in girls. The symptoms include swelling around your child's eyes in the morning. Often, that's the first sign. As time passes, the swelling may last all day, and you may see swelling in your child's ankles, feet or belly. Other symptoms include tiredness, irritable, decrease appetite and pale looking. This disease is diagnosed by the doctor who will check for symptoms. A urine test can check for the amount of protein, blood and other things to look for kidney damage. A blood test can show how well your child's kidneys are working. The doctor will also check for other diseases that may be causing the nephrotic syndrome. In some cases, diagnosis may also require a kidney biopsy.

Nephrotic syndrome is almost always treatable, but the treatment depends on the cause. The treatment's goal is to stop the loss of protein in the urine and increase the amount of urine passed from the body. Your doctor probably will prescribe a drug called prednisone for your child. Most children get better on this drug.