Signs and Symptoms
- Pain in the affected area
- Skin redness and inflammation
- Edema (swelling)
- Veins become hard and cord-like
- Tenderness

Complications
- Superficial blood clot associated with deep vein thrombosis
- Pulmonary embolism, which can be life-threatening
- Dislodgement and travel of the clot through the heart
- Occlusion of the dense capillary network of the lungs
- Increased risk of complications when thrombophlebitis occurs

Causes
- Deep vein thrombosis in the right leg
- Disorders related to increased tendency for blood clotting
- Reduced speed of blood flow in the veins
- Prolonged immobility
- High estrogen states such as pregnancy, estrogen replacement therapy, or oral contraceptives

Diagnosis
- Diagnosis primarily based on the appearance of the affected area
- Frequent checks of pulse, blood pressure, and temperature
- Tests may be performed to determine the cause, such as Doppler ultrasound or extremity arteriography

Prevention
- Walking regularly
- Drinking plenty of fluids
- Changing IV lines if currently hospitalised
- Walking after a long period of sitting, especially during travel
- Taking preventive measures to reduce the risk of thrombophlebitis

Thrombophlebitis (Wikipedia)

Thrombophlebitis is a phlebitis (inflammation of a vein) related to a thrombus (blood clot). When it occurs repeatedly in different locations, it is known as thrombophlebitis migrans (migratory thrombophlebitis).

Thrombophlebitis
Other names	Phlebitis
Ultrasonographic image showing thrombosis of the great saphenous vein.
Specialty	Cardiology
Symptoms	Skin redness
Risk factors	Smoking, Lupus
Diagnostic method	Doppler ultrasound, Venography
Treatment	Blood thinners, Pain medication