There are many reasons for the sudden thickening of the legs, and the common reasons are muscle increase, deep vein thrombosis of the lower extremities, leg swelling and so on.
1. Muscle increase: due to regular exercise leads to thickening of leg muscle fibers, muscle physiological cross-sectional area becomes larger, the larger the muscle physiological cross-sectional area, the more developed the muscle, so there will be thickening of the leg, which is a normal performance, do not need to be treated.
2. Deep vein thrombosis of the lower limbs: Sudden thickening of one side of the leg may be due to deep vein thrombosis of the lower limbs, when deep vein thrombosis of the lower limbs is formed, it can lead to swelling of the lower limbs.
3. Leg swelling: leg swelling may be cardiogenic, nephrogenic, hepatic, sudden thickening of the leg, you can press with your hand, if there is a pit when you press down, and the pit slowly recovers, it means that it is edema of the leg.
Sudden thickening of the legs may also be caused by other reasons, if it is simple exercise leads to muscle increase, do not need special treatment, should pay attention to the size of the exercise, if there are other pathological need to consult a doctor in time, please ask the doctor to clarify the specific causes, if necessary, the corresponding treatment.