Undoubtedly one of the most common running ailments, runner's knee or patellofemoral pain syndrome (PFPS), can hamper your training or leave you completely sidelined. The pain associated with runner's knee is located under, slightly above or below the kneecap. It generally worsens when athletes run uphill, downhill or up and down stairs. A popping sensation is sometimes audible. In the worst cases, the knee may swell. More: How to Prevent Knee Pain and Injury. A term used to describe a number of knee issues, runner's knee often occurs because of an increase in mileage. While some harriers will experience sporadic pain, others have problems nearly every time they add miles. The condition can also be related to poor running form and core strength.
Keratitis is a condition in which the eye's cornea, the clear dome on the front surface of the eye, becomes inflamed. The condition is often marked by moderate to intense pain and usually involves any of the following symptoms: pain, impaired eyesight, photophobia, red eye and a 'gritty' sensation.
Medical Definition of Keratosis follicularis. Keratosis follicularis: A genetic skin disease that is characterized by slowly progressive hardening of the skin (keratosis) around the hair follicles. This disorder is inherited in an autosomal dominant manner and is due to mutation in a gene called ATP2A2 on chromosome 12. Also known as Darier disease.