1) Ache: 疼 (动词) 。 My arm is aching. （我胳膊疼）
2) Hurt: 疼, 弄疼（动词或名词）。My arm hurts. (我胳膊疼) You are hurting me. （你把我弄疼了。）
3) Headache: 头痛 fever: 发烧 flu: 流感、感冒； I have a flu.
4) Toothache: 牙疼。Dentist: 牙医。 I have toothache, so i will go to see a dentist.
5) Running nose: 流鼻涕 ---Blocked nose/stuffy nose: 鼻塞
6) Sore: 红肿的，发炎的 I have a sore throat and stuffy nose. Sore eyes;
7) Illness: 疾病。He beat illness twice.
8) Sick: I am sick. 生病的; Sickness： 生病
9) Infection/infected: 感染 。 I had an infection with my leg. /my leg was infected.
10) Itchy: 痒的； my eye is itchy.
11) Diarrhea: 拉肚子----constipation: 便秘； I had a diarrhea a few days ago.
12) Twist: 扭了。My foot was twisted when I jumped from roof.
13) Cramp: 抽筋。 I had a cramp with my legs.
14) Inflammation: 发炎，炎症。The egg sometimes could trigger inflammation. （鸡蛋有时也会引起发炎。）
15) Clinic: 诊所。Hospital: 医院。 She is in hospital. (她住院了。) she is in the hospital. (她在医院 (地理位置上在医院，不是特指住院。))