Pain in the lower back and hip radiating down the back of the thigh into the leg, initially attributed to sciatic nerve dysfunction (hence the term), but now known to usually be due to herniated lumbar disc compromising the L5 or S1 root.See: sciatic. (Contugno), Domenico Felice Antonio, Italian anatomist, 1736-1822.ain in the lower back and hip radiating down the back of the thigh into the leg, initially attributed to sciatic nerve dysfunction (hence the term), but now known to usually be due to herniated lumbar disc compromising the L5 or S1 root. See: sciatic. (Contugno), Domenico Felice Antonio, Italian anatomist, 1736-1822.
Dark spots are the result of the overproduction of melanin (skin pigment). It's not fully understood why dark spots develop, but aging and UV light exposureâeven exposure to artificial UV light, like the kind used in tanning bedsâare major causes. Dark spots can develop anywhere, but they are most likely to appear on the parts of the body that receive the most sun exposure, including: 1  The face. 2  The backs of the hands. 3  The shoulders. 4  The arms. 5  The back.
Many people suffer from dark circles under the eyes. They are embarrassing and make you look older than you are. There are lots of ways adults and children can develop these dark circles under their eyes. Yes, some people have dark circles under their eyes because of lack of sleep or too much alcohol. But those arenât the only reasons. Letâs talk about other possible reasons why you have dark circles under your eyes and what you can do about it.