Sickle cell anaemia is a genetic blood disorder characterised by the production of an abnormal haemoglobin, known as haemoglobin S. Sickle cell disease changes the shape of blood cells into a crescent ...

Enthesitis can also occur with another common symptom of PsA, dactylitis. This is a painful inflammation of a finger or a toe. Enthesitis can cause long-lasting (chronic) inflammation, which can ...