There are several types of thalassemia. The signs and symptoms you have depend on the type and severity of your condition. Thalassemia signs and symptoms can include: 
Fatigue
Weakness
Pale or yellowish skin
Facial bone deformities
Slow growth
Abdominal swelling
Dark urine
 Some babies show signs and symptoms of thalassemia at birth; others develop them during the first two years of life. Some people who have only one affected hemoglobin gene don't have thalassemia symptoms.