Excema is a very common misspelling of the skin condition Eczema.
Eczema has proven to be a very difficult word to spell and can widely vary between:
- excema
- exema
- exma
- eccema
- ezcema
- eczma
- excma
- xma
- xema
All of these variations will be understood, but the correct spelling of the condition is Eczema.