Lymphoedema

Lymphoedema is chronic swelling, most often of a limb, caused by a build-up of lymph fluid due to impaired drainage of the lymphatic system. It can result from infection, surgery, cancer treatment, or, in some regions, lymphatic filariasis.

• Persistent swelling of a limb (or, less commonly, another body part), which may initially be soft and pitting but become firmer over time
• A feeling of heaviness or tightness in the affected limb
• Thickened, hardened skin with long-standing swelling
• Recurrent skin infections (cellulitis) in the affected limb are common and can worsen the swelling further

• Results from damage to or blockage of the lymphatic vessels, which normally drain excess fluid from body tissues.
• In many tropical regions, including parts of Tanzania, lymphatic filariasis (a mosquito-borne parasitic infection) is an important cause.
• Other causes include surgery or radiotherapy involving lymph nodes (such as for cancer treatment), recurrent skin infections, and, less commonly, conditions present from birth affecting lymphatic development.

• Diagnosed clinically based on the characteristic pattern of chronic limb swelling together with a relevant history, such as prior filarial infection, surgery, or recurrent skin infections in the area.
• Assessment for an underlying treatable cause, such as active filarial infection, is important, as this affects management.

Regular skin care and hygiene of the affected limb are essential to reduce the risk of skin breakdown and infection, which can worsen lymphoedema.

Compression, using bandaging or compression garments where available, along with elevation of the affected limb and specific exercises, helps manage swelling and is a cornerstone of long-term care.

Any underlying cause identified, such as active lymphatic filariasis, is treated according to the relevant protocol.

Prompt treatment of any skin infection in the affected limb is important, as recurrent infections can worsen lymphatic damage over time.

Long-term, consistent self-care significantly improves comfort and function, even though lymphoedema is generally a chronic condition requiring ongoing management rather than a one-time cure.

• Practise careful skin hygiene and moisturising of the affected limb to prevent cracks that can allow infection to enter.
• Elevate the affected limb when resting, and use compression as advised.
• Seek prompt treatment for any signs of skin infection in the affected limb.
• Support community mass drug administration campaigns in areas where lymphatic filariasis is endemic, to help prevent this cause of lymphoedema.