How do I tell a canker sore from a cold sore or hsv fever blister?
I get sores in my mouth a few times a year and I always assumed they were canker sores, but this time I have a bump right on the edge of my lip that started tingling first. My lips were also really chapped from the wind lately so I am not sure if that is playing a part. How do you tell the difference between a canker sore and a cold sore, and does location matter?
In my experience canker sores show up inside the mouth on the soft tissue and never blister, while cold sores tend to sit on or around the lip border and go through that tingle, blister, and crust stage. That tingle you noticed is usually the giveaway for me, but a doctor or pharmacist is the right person to confirm.
Chapped lips can definitely make everything more confusing, so I keep a plain lip balm with spf on hand and stay on top of hydration during windy or sunny weeks. That routine alone cut down on how often my lips got irritated in the first place.
I cannot tell you what yours is, but I would get it looked at, especially the first time. For me, focusing on sleep, managing stress, and keeping my lips protected from sun and wind has been the most helpful wellness routine, and I keep lysine rich foods in my diet as part of that too.
For me the giveaway was always location, canker sores only ever showed up inside my mouth on the soft pink bits, while the cold sores came with that tingly itchy warning on the edge of my lip a day before anything even appeared. Took me years to stop mixing them up though, so don't feel bad!
Cold sores usually start with that telltale tingling or burning on the lip edge before blisters show up, while canker sores for me are always inside the mouth and look like little white craters. Honestly when I couldn't tell the difference my doctor sorted it out in one quick visit, so don't be shy about asking.
For me the giveaway was location, my canker sores were always inside my mouth on the soft parts, but the cold sores showed up right on the edge of my lip and I'd feel that weird tingle a day before anything was even visible. Took me years to figure that out so don't feel bad for asking!
For me the easiest tell has been location: my canker sores are always inside my mouth on the soft bits, while the cold sores show up on the lip edge and give me that annoying tingle a day before anything is even visible. Took me way too many years to figure that out, so don't feel bad for asking.
Honestly the thing that finally made it click for me was location, my canker sores are always inside my mouth on the soft bits and never blister, while the cold sores show up on the edge of my lip with that awful tingle a day before anything is even visible. Still, when I was really unsure I just got a doctor to look at it once and that took a lot of the guessing out for me.
This is exactly the kind of thing the community is for. Small consistent habits beat any single fix, in my experience.