What 瘙 means
It means itching, especially scabies-type itching.
The exact form is already found in medieval dictionaries, built as a sickness word: the 疒 side marks illness and 蚤 gives the sound. Its everyday job is the compound 瘙痒, itching or pruritus.
Technical when alone; use 瘙痒 for ordinary itching talk.
Do not use lone 瘙 for everyday itching.
Don't confuse it with
1Combination ideas
1The medical word for itching or pruritus.
Questions people ask
1Why does 瘙 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 瘙
Windows (Word)
Alt+XType 7619, then Alt+X to get 瘙.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “cjk unified ideograph-7619”.
Linux
Ctrl+Shift+UType 7619, then Enter or Space.
HTML
瘙CSS
\7619瘙怎么读
Type sào pinyin, or sāo if sào misses; dictionaries list both.
Copy it
Copy it from the palette above; your font draws it.
Codes and encoding1 code points
HTML decimal
瘙
HTML hex
瘙
CSS content
content: "\7619";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E7%98%99
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.