not in this case.

lz wrote "大腿順著內褲的邊緣幾乎連成一條線的小包" ,  either flea or bedbug could be considered.

It was happened after yard work, bedbug can be excluded.

the skin rashes by poison ivy should be clustered, not a list（line) of individual bumps.

所有跟帖： 

• 我那時不懂bedbug，也不懂過敏，從來不過敏，自己認為是後院草裏的spider咬的。 -lawattaction- ♀ (130 bytes) () 07/08/2021 postreply 21:56:06