That aforementioned American College of Physicians report, aptly titled Noninvasive Treatments for Acute, Subacute, and Chronic Low Back Pain , offers more or less everything a physician today needs to know to cure lower back pain. Assuming you don’t have time to read the thing, here’s the biggest takeaway: get ample rest, preferably on a comfortable bed. For acute back pain, you’ll just want to rest for a couple of days, maybe take some Advil or Ibuprofen. For chronic pain, the solution is the same: when pain rears its ugly head, keep your back cozy and horizontal, and you’ll be back to better before you know it. If, after a few days, the pain hasn’t cleared up—or if the pain is severe to the point of debilitation—that’s when you should consider going to the doctor.
Towards the end of 1169, Saladin, with reinforcements from Nur ad-Din, defeated a massive Crusader- Byzantine force near Damietta . Afterward, in the spring of 1170, Nur ad-Din sent Saladin's father to Egypt in compliance with Saladin's request, as well as encouragement from the Baghdad -based Abbasid caliph, al-Mustanjid , who aimed to pressure Saladin in deposing his rival caliph, al-Adid.  Saladin himself had been strengthening his hold on Egypt and widening his support base there. He began granting his family members high-ranking positions in the region; he ordered the construction of a college for the Maliki branch of Sunni Islam in the city, as well as one for the Shafi'i denomination to which he belonged in al-Fustat .