1
develop dermatitis
develop 在此表示“患上（疾病）”，常用于描述皮炎的开始。
He developed dermatitis after using the new soap.
他用了那种新肥皂后患了皮炎。
皮炎；皮肤炎
dermatitides — plural of dermatitis
先理解核心含义，再看它在真实句子里的用法。
皮炎；皮肤炎
inflammation of the skin, causing itching and sometimes blisters
He developed dermatitis after using the new soap.
他用了那种新肥皂后患了皮炎。
皮炎:皮肤炎症。
Inflammation of the skin.
皮炎
inflammation of the skin; skin becomes itchy and may develop blisters
The doctor told me the rash on my arm is dermatitis.
医生说我胳膊上的皮疹是皮炎。
Her job as a cleaner gave her dermatitis on her hands.
她做清洁工的工作让她的双手患上了皮炎。
You should see a dermatologist if your dermatitis does not improve.
如果你的皮炎不见好转，就应该去看皮肤科医生。
develop 在此表示“患上（疾病）”，常用于描述皮炎的开始。
He developed dermatitis after using the new soap.
他用了那种新肥皂后患了皮炎。
用 on 说明皮炎发生的部位。
The cream relieved the dermatitis on her neck.
这种乳膏缓解了她脖子上的皮炎。
suffer from 多用于较长期或慢性的疾病。
Many patients suffer from dermatitis during the winter.
许多病人在冬天患皮炎。
Not this
I have a dermatitis on my arm.
Use this
I have dermatitis on my arm.
dermatitis 表示“皮炎”时通常为不可数名词，不能直接加不定冠词 a；表示“患皮炎”用 have/develop dermatitis。
Not this
My sister studies dermatitis at university.
Use this
My sister studies dermatology at university.
dermatitis 指“皮炎”这种疾病，而“皮肤病学”是 dermatology；表示学习的学科时应用 dermatology，而非 dermatitis。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
接触性皮炎
Wearing cheap jewelry gave her contact dermatitis.
戴廉价首饰使她患上接触性皮炎。
特应性皮炎
Atopic dermatitis often begins in early childhood.
特应性皮炎通常在幼儿期发病。
脂溢性皮炎
Seborrheic dermatitis commonly affects the scalp.
脂溢性皮炎常影响头皮。
过敏性皮炎
The rash was diagnosed as allergic dermatitis.
皮疹被诊断为过敏性皮炎。
慢性皮炎
Chronic dermatitis can make the skin thick and leathery.
慢性皮炎会使皮肤增厚、变得像皮革一样。
患上皮炎；出现皮炎
If a chemical irritates your skin, you may develop dermatitis.
如果某种化学品刺激皮肤，你可能会患上皮炎。
Use dermatitides naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：derma 像“皮肤”，-itis 表示“发炎”，合起来就是皮肤发炎，即皮炎。
语域：formal 常见场景：medical records、clinical consultations、pharmaceutical product information dermatitis 是医学术语，通常用于正式或专业场合，如病历、医学文献或药品说明；日常口语中较少使用，比较常见于医生诊断或健康科普时。
All six words rhyme with dermatitis: each ends in a stressed /aɪtɪs/ (or /tɪs/ after a stressed /aɪ/) and names an inflammatory condition. Beware lookalikes with different endings, such as 'critic' /ˈkrɪtɪk/ or 'practice' /ˈpræktɪs/.
Dictionary facts from ECDICT, WIKTIONARY.