Sudden growths on the dorsum of the feet may be caused by non-disease factors, but may also be related to pathological factors such as tendon sheath cysts, lipomas, sebaceous cysts, allergies, gout and so on.
1. Non-pathological factors: such as mosquito bites on the dorsum of the foot, shoes that do not fit the foot so that the dorsum of the foot long-term wear and tear may cause the dorsum of the foot long bag, should avoid scratching, timely replacement of comfortable shoes, the symptoms may be gradually relieved.
2.Pathologic factors
(1) Tendon sheath cysts: mostly seen in young and strong people, especially women who often wear high heels or porters, which will easily cause the tendon sheath at the dorsum of the foot to rub against the tendons for a long time and lead to tendon sheath cysts, which will be manifested as a sudden growth of bunions at the dorsum of the foot.
(2) Lipoma: the accumulation of fat at the dorsum of the foot can also form lumps, and the lumps are relatively smooth, with good fluidity, usually not accompanied by obvious pressure and pain, but if the compression of the nerves may cause local numbness, pain symptoms.
(3) Sebaceous cysts: When the sebaceous ducts at the dorsum of the feet are blocked, sebum may accumulate for a long time and form lumps, i.e., sebaceous cysts, and the secondary infection may cause localized redness, swelling, pain, and pus.
(4) Allergic reaction: such as the dorsum of the feet in contact with animal hair or chemical fiber components of the socks after the local allergic reaction, manifested as the dorsum of the feet suddenly small packets of red pimples, and accompanied by obvious itching.
(5) Gout: mostly related to hyperuricemia, when excessive uric acid is deposited in or around the joints of the dorsum of the feet, it may cause the appearance of lumps on the dorsum of the feet, accompanied by pain, redness and swelling of the joints, and elevated skin temperature.
The sudden growth of bags on the back of the feet is not limited to the above cases, so it is recommended to consult a doctor in a timely manner to find out the reasons for the growth of bags on the back of the feet, and actively carry out targeted treatment, so as to avoid delays in the condition.