How to Write 瘙 (sào) — Meaning “to itch”

Imagine a sick person (疒) covered in fleas (蚤) and scratching constantly because of the itch. The fleas are the cause, so the character visually tells you the meaning. This image helps you connect the parts to the idea of itching.

The radical 疒 must be wide enough to cover the lower part, and its dot should be placed clearly at the upper left. The lower part 蚤 is complex—make sure the insect radical (虫) is centered and the top strokes (similar to 又) are not too cramped. A common mistake is making the whole character too narrow or forgetting the dot in 疒.

While 痘 means "pimple" or "smallpox" (also under the illness radical), it refers to a specific skin bump, not the sensation of itching. 痛 means "pain" and describes a different physical feeling. 瘙 specifically refers to the itch itself, often used in medical terms like 瘙痒 (itching).

瘙 appears almost exclusively in formal or medical language, such as in the words 瘙痒 (itching) and 瘙痒症 (pruritus). You will not hear it in everyday conversation; instead, people use the more common word 痒 (yǎng) for "itch." It is mostly seen in hospital reports or dermatology contexts.

Common words containing 瘙 include: 瘙痒 (sào yǎng) — itching; pruritus; 止瘙 (zhǐ sào) — Relieve itching; 瘙痒症 (sào yǎng zhèng) — pruritus (medical condition).