Hard should and lump after injecting

[M37H]

Wyat is this hardening of the muscle and big lump my shoulder gets after injection? It seems like only my left one does this.

[nooby]

and you keep pinning in your left shoulder. SMH. Rotate and avoid that shoulder for a while. You have four other sites you could be using.

[ScotchGuard02]

Most likely a welt. It happens sometimes. I'll be going along fine and all of a sudden I get a welt. If the welt is site specific and your core body temp isn't going up it probably isn't an infection.

[M37H]

I do rotate the shoulder champ, but might start using the glutes now. Yeah no temp just lump when I inject

[castiron]

I think it depends on what you are shooting. long esters take longer to absorb and require more water to breakdown, hence more probability of a welt.