Erythromelalgia is a rare symptom of<unk> , here present in a patient with longstanding<unk> . Note reddish limbs and swelling. People with<unk>  can be asymptomatic. A classic symptom of<unk>  is pruritus or itching, particularly after exposure to warm water (such as when taking a bath), which may be due to abnormal histamine release or prostaglandin production. Such itching is present in approximately 40% of patients with<unk> . Gouty arthritis may be present in up to 20% of patients. Peptic ulcer disease is also common in patients with<unk> ; most likely due to increased histamine from mast cells, but may be related to an increased susceptibility to infection with the ulcer-causing bacterium H. pylori. Another possible mechanism for the development for peptic ulcer is increased histamine release and gastric hyperacidity related with<unk> . A classic symptom of<unk>  (and the related myeloproliferative disease essential thrombocythemia) is erythromelalgia. This is a burning pain in the hands or feet, usually accompanied by a reddish or bluish coloration of the skin. Erythromelalgia is caused by an increased platelet count or increased platelet "stickiness" (aggregation), resulting in the formation of tiny blood clots in the vessels of the extremity; it responds rapidly to treatment with aspirin. Patients with<unk>  are prone to the development of blood clots (thrombosis). A major thrombotic complication (e.g. heart attack, stroke, deep venous thrombosis, or Budd-Chiari syndrome) may sometimes be the first symptom or indication that a person has<unk> . Headaches, lack of concentration and fatigue are common symptoms that occur in patients with<unk>  as well.
Polycythemia vera
Capillary leak syndrome
Essential thrombocythemia
Aplastic anemia
Primary myelofibrosis
Myomatous erythrocytosis syndrome
Immune thrombocytopenic purpura
Chronic myelogenous leukemia