What is a major contraindication to massage for the legs?

Thrombophlebitis is indeed a major contraindication for massage in the legs due to the presence of a blood clot in a vein, which can lead to serious complications if the clot dislodges and travels to the lungs, causing a pulmonary embolism. In this condition, there is inflammation of the vein associated with a clot, and applying massage can increase the risk of dislodging the clot, potentially resulting in life-threatening consequences.

In contrast, while varicose veins represent a concern for those receiving massage—due to the potential for increased venous pressure—therapy might still be adjusted with caution rather than outright contraindicated. Muscle strains and shin splints typically involve muscular or overuse issues that may benefit from careful massage interventions rather than posing a significant risk. Thus, understanding the nature of thrombophlebitis emphasizes the necessity of avoiding massage in such a case for the safety of the client.