Hard lumps felt inside the flesh of the thigh may be caused by enlarged lymph nodes, sebaceous cysts, varicose veins of the great saphenous veins, lipomas, fibroadenomas, and other diseases. The severity of the disease depends on the specific condition and cannot be generalized. 1. Enlarged lymph nodes: When there is inflammation near the thigh, it is easy to have enlarged lymph nodes, which will lead to the phenomenon of hard lumps felt inside the thigh flesh. If there is no redness or swelling on the surface, it can be gradually recovered after the primary inflammation subsides, and no special treatment is needed. 2. Sebaceous cysts: when the hair follicles are blocked, it will cause sebaceous gland excretion obstacle, and sebaceous cysts will appear, resulting in hard lumps that can be felt inside the thigh meat. If there is no secondary infection, elective surgical removal is sufficient. 3. Varicose saphenous vein: If you stand for a long time and work under heavy load, you may get thrombosis of the saphenous vein of the lower limbs. When some of the veins have inflammation or inflammatory thrombosis, it is easy to feel hard lumps inside the thigh flesh. You need to go to the hospital in time. 4. Lipoma: Lipoma is a common benign tumor of subcutaneous soft tissue. The inside of the tumor is adipose tissue, and the border of the tissue around the tumor is clear. Lipoma is mostly round or oval, with bumps of different sizes. If there is no discomfort, no treatment is needed. 5. Fibroadenoma: it is formed by heterogeneous proliferation of fibroblasts in the inner thigh and local aggregation, which manifests as a lump with clear boundary, tougher texture, uniform density and no adhesion with the surrounding tissues, and can be pushed. If there is no discomfort, elective surgery. Thigh meat felt inside the hard lump is recommended to timely visit the hospital dermatology, clear cause of the disease under the guidance of the doctor for proper treatment.