Ischias (lumbago, úsad alebo „húser“)
Sciatica refers to back pain caused by a problem with the sciatic nerve. It is the largest nerve in our body, which begins in the lower back and continues along the posterior part of each lower limb. The sciatic nerve function is associated with the lower limbs, the lumbar spine and the sacrum. If the sciatic nerve is damaged or put under pressure, it can cause pain in the lower back which spreads to the lumbar spine, buttocks and legs, especially on the back of the thigh, which are the most common symptoms of sciatica.
The pain usually affects only one limb and can be exacerbated by rapid movement during longer periods of sitting, but even while coughing or sneezing. The foot may also become less sensitive, weaker, or you may experience tingling and paresthesias in some cases. Sciatica and its symptoms appear suddenly and usually improve after a period of rest. If the pain persists for several weeks, medical intervention is necessary.