please help me

hi
I took eryc-333 mg(erytromycin)3 days a go and next day i saw bruise on my right arm. I am so afraid that maybe its sighn of dangrous ilneses like hiv.after 3 days now its getting better.is it posible ,antibiotics like erytromycin can cuase easy bruising?
and bruising you think its the sighne of early hiv symothoms and they last long or they disappear soon?

thanks

[Alan Rockoff, MD]

Please don't worry.  First of all, erythromycin doesn't cause serious diseases.  Second, bruises like yours happen all the time.  You get bumped and don't remember it because it wasn't a big deal, and then you see this dark spot and it scares you.  It will go away and sounds like it is already doing that.

Best.

Dr. Rockoff