poor concentration

動悸, 弱点, 食欲不振, palpitations without fever

Anemia (AmE) or anaemia (BrE), from the Greek meaning "without blood", refers to a deficiency of red blood cells (RBCs) and/or hemoglobin. This results in a reduced ability of blood to transfer oxygen to the tissues, causing hypoxia; since all human cells depend on oxygen for survival, varying degrees of anemia can have a wide range of clinical consequences. 

貧しい人々の調整, 頭痛, u36;吐, change in cognition

Head injury is a trauma to the head, that may or may not include injury to the brain (see also brain injury). ... 

うつ病, 行動の変化, 過敏性, 食欲不振

Bipolar disorder, once known as manic-depression, is a psychiatric diagnosis referring to a mental health condition defined by periods of extreme, often inappropriate, and sometimes unpredictable mood states. 

反復的な行為, 同一の主張, 強迫的な行為, 集中力の低下

Obsessive-compulsive disorder (OCD) is a psychiatric disorder most commonly characterized by a subject's obsessive, distressing, intrusive thoughts and related compulsions (tasks or "rituals") which attempt to neutralize the obsessions. 

うつ病, 不安, 眠れない, 過敏性

Post-traumatic stress disorder (PTSD) is a term for certain severe psychological consequences of exposure to, or confrontation with, stressful events that the person experiences as highly traumatic. Clinically, such events involve actual or threatened death, serious physical injury, or a threat to physical and/or psychological integrity, to a degree that usual psychological defenses are incapable of coping with the impact. 

動悸, 呼吸困難, 増加発汗, 胃の痛み

Anxiety is an unpleasant, emotional state of high energy that involves a complex combination of emotions that include fear, apprehension, and worry. It is often accompanied by physical sensations such as heart palpitations, nausea, chest pain, shortness of breath, or tension headache. 

男性の性的欲求を減少した, 眠れない, 頭痛, 食欲不振

In everyday language depression refers to any downturn in mood, which may be relatively transitory and perhaps due to something trivial. This is differentiated from Clinical depression which is marked by symptoms that last two weeks or more and are so severe that they interfere with daily living. 

減量, 男性の性的欲求を減少した, 眠気, 食欲不振

Clinical depression (also called major depressive disorder, or sometimes unipolar when compared with bipolar disorder) is a state of intense sadness, melancholia or despair that has advanced to the point of being disruptive to an individual's social functioning and/or activities of daily living. 

呼吸困難, 眠れない, 眠気, 過敏性

Sleep apnea or sleep apnoea is a sleep disorder characterized by pauses in breathing during sleep. These episodes, called apneas (literally, "without breath"), each last long enough so one or more breaths are missed, and occur repeatedly throughout sleep. 

アウトを渡します, 吐き気, 頭痛, u36;吐