Question: What is (are) Milroy disease ?
Answer: Milroy disease is a lymphatic disease that causes swelling (lymphedema) in the lower legs and feet. Lymphedema is usually present at birth or develops in infancy. It typically occurs on both sides of the body and can worsen over time. Other symptoms may include accumulation of fluid in the scrotum in males (hydrocele), upslanting toenails, deep creases in the toes, wart-like growths, prominent leg veins, and/or cellulitis. Milroy disease is sometimes caused by changes (mutations) in the FLT4 gene and is inherited in an autosomal dominant manner. In many cases, the cause remains unknown. Treatment may include lymphedema therapy to improve function and alleviate symptoms.
Source: GARD

Question: Is Milroy disease inherited ?
Answer: How is Milroy disease inherited? Milroy disease is inherited in an autosomal dominant manner. This means that having one changed (mutated) copy of the responsible gene in each cell is enough to cause symptoms of the condition. When a person with an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit the mutated copy of the gene. Most people with Milroy disease have an affected parent, but some cases are due to new mutations that occur for the first time in the affected person. About 10-15% of people with a mutation in the responsible gene do not develop features of the condition. This phenomenon is called reduced penetrance.
Source: GARD

Question: How to diagnose Milroy disease ?
Answer: Is genetic testing available for Milroy disease? Yes. The Genetic Testing Registry (GTR) provides information about the labs that offer genetic testing for Milroy disease. The intended audience for the GTR is health care providers and researchers. People with questions about genetic testing should speak with a health care provider or genetics professional. If a mutation in the responsible gene has been identified in a family, genetic testing for at-risk relatives may identify those who may benefit from treatment early in the disease course. Prenatal testing for pregnancies at increased risk may also be available.
Source: GARD

Question: What are the treatments for Milroy disease ?
Answer: How might Milroy disease be treated? There is currently no cure for Milroy disease. Management is typically conservative and usually successful in most people. Management of lymphedema should be guided by a lymphedema therapist. Some improvement is usually possible with the use of properly fitted compression hosiery or bandaging and well fitting, supportive shoes. Good skin care is essential. These measures may improve the cosmetic appearance of the affected areas, decrease their size, and reduce the risk of complications. Decongestive physiotherapy, which combines compression bandaging, manual lymphatic drainage (a specialized massage technique), exercise, breathing exercises, dietary measures and skin care, has become the standard of care for primary lymphedema. People with recurrent cellulitis may benefit from prophylactic antibiotics. Surgical intervention is considered a last option when other medical management fails. When possible, people with Milroy disease should avoid: wounds to swollen areas (because of their reduced resistance to infection) long periods of immobility prolonged standing elevation of the affected limb certain medications (particularly calcium channel-blocking drugs that can cause increased leg swelling in some people)
Source: GARD