The best way to fight a cold is with plenty of rest and fluids, but doctors admit that medication can make the worst symptoms more bearable. But it's important to know that no drug will actually lessen the length or severity of your cold; it can only treat the symptoms.
If the pain in the buttocks is more noticeable when sitting it may be caused by tightness in the hamstring. Proximal hamstring tendonopathy and high hamstring tendonitis is defined as inflammation originating in the hamstring, causing pain in the lower buttocks, or pelvic bone region.
1 This can cause irritation in the nerve roots, which results in sciatica.  Piriformis syndrome â The piriformis is a part of the pelvis and is a very large muscle. If that muscle becomes overworked and swollen, it can pin the sciatic nerve in the buttock and cause sciatica.