Here are a few descriptions for the WordPress post tag “憂鬱症成因” in Traditional Chinese, varying in style and focus:

**Option 1 (Concise & Informative):**

> 探索憂鬱症的根本原因，包括生理、心理、環境等多種因素。了解這些成因，能幫助我們更有效地預防、辨識和治療憂鬱症。

**Translation:** Exploring the root causes of depression, including biological, psychological, and environmental factors. Understanding these causes can help us prevent, identify, and treat depression more effectively.

**Why it’s good:** Direct, informative, and relevant to the tag’s title.

**Option 2 (Slightly more detailed):**

> 深入探討憂鬱症的各個成因。揭示大腦化學物質失衡、遺傳因素、壓力事件以及生活方式等如何影響我們的心理健康，導致憂鬱症的發病。

**Translation:** Delving deep into the various causes of depression. Revealing how imbalance of brain chemicals, genetic factors, stressful events, and lifestyle can influence our mental health and lead to the onset of depression.

**Why it’s good:** Provides a bit more context and highlights key factors.

**Option 3 (Focusing on self-exploration and learning):**

> 想了解憂鬱症是如何發生的嗎？這個標籤匯集了關於憂鬱症成因的深度文章，幫助你從不同角度探索：生物、心理、社會… 解開憂鬱症的奥秘，開始關懷自己的第一步。

**Translation:** Want to understand how depression develops? This tag gathers in-depth articles about the causes of depression, helping you explore from different perspectives: biological, psychological, social… Unravel the mystery of depression and take the first step towards self-care.

**Why it’s good:** Encourages engagement and offers a supportive tone.

**Option 4 (Short & Sweet):**

> 探究憂鬱症的成因，包括生理、心理和環境因素。

**Translation:** Exploring the causes of depression, including biological, psychological, and environmental factors.

**Why it’s good:** Very concise and easy to understand.
**How to choose the best option:**

* **Consider your target audience:** Are they looking for a quick summary or a more in-depth explanation?
* **Match the tone of your website:** Is your website formal or more approachable?
* **Keep length in mind:** WordPress might have character limits for descriptions.

I recommend using Option 1 or 4 for its conciseness and clarity, or Option 2 for a slightly deeper dive. Change “憂鬱症” to “抑鬱症” if that is more appropriate for your target location. Choose the description that best fits your site’s style and the context of your content!