red spot on the side of silver dollar please help!

Hey everyone, I've noticed this for the past 2 weeks or so on one of my myleus schrombergi silver dollars (butchered that name lol) thinking it was my EBH's picking on this particular fish (i've noticed that the two species stay seperate) anyways i thought this was a battle wound and figure with time it would heal-now I'm seeing it on the other side of the fish as well just after the pectoral fins on both sides...red marks, the original one i noticed is raised quite a bit...just as a precaution, i added some more salt to tank, and put in some prazi...thinking parasite at first, but after doing some research, i think it can be an internal thing? and should treat with maracyn 2-what do you guys think?
side note-this guy seems to be very healthy, and eating, and active- he's not acting wierd or anything...i just want to make sure he gets treated for whatever it is he has..
ph is about 7.6, ammonia, and nitrite are good-
thanks guys!!!
john

def not showing color as I'm familiar with what your talking about-this is not normal-and is some type of infection/parasite..the original spot is raised almost like a growth-blood red in color...can't get a pic now as im at work, and that fish is rather quick, i pulled him out to get a better look, so maybe tomorrow I will do the same-
but is anyone familiar with what I'm describing...

ok so i'm in between:

Erythrodermatitis
Synonyms:
Red Sore Disease

Symptoms:
Lethargic, anorexic, emaciated, heavily ulcerated with bloody red sores

Causes:
Poor environment conditions can encourage bacteria of the Aeromonas genus to proliferate and infect fish. The bacteria itself is responsible for other bacterial diseases such as fin rot.

Erythrodermatitis for carps occur during summer and autumn. The disease takes a slow course. At first, the fish may appear to have a healthy impression but red stains appear in the next few weeks turning into ulcers that break open and the fish soon afterwards die with large open sores on the skin.

This disease has been confused with spring virosis as it appears as red stains the early stages. It can be assumed that this disease can be transmitted by blood-sucking parasites, a similar case that occurs with the spring virosis.

Treatment:
Terramycin, Romet-30, Sera Cyprinopur


AND


[FONT=&quot]Goiter[/FONT][FONT=&quot]
Symptoms:
Thyroid gland tumor develops in the throat area.

Causes:
Lack of iodine.

Treatment:
Iodized table salt-It can be argued that this type of salt is harmful to fish simply because of the presence of additives and anti-caking agents however there have been reports of the use of iodized table salts without any issues at all. The choice is yours whether you wish to use it or not.

Foods containing iodine-Feed the fish regularly with foods containing iodine. The tumor may recede as time progresses.

Mineral salts-In some places, water does not contain enough iodine. It is therefore advisable to add mineral salts especially when you use reverse-osmosis (RO) water to replenish the minerals lost preventing nutrient deficiency. This must be used regularly until the tumor recedes. [/FONT]
[FONT=&quot]
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[FONT=&quot]And or tumor-however the second one I noticed appears to have a thin line before the red area...
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yeah i def gotta get pics up here, can def do that by tomorrow morning-please check back by then!!!!
I think I'm going to catch him again, fill a small tank with his water, put some light on it and snap some pics-his environment has dull lighting...and too many places for him to hide...

here's the first pic...uploading more, but this is a start...can someone point me in the right direction here...

this one below is the opposite side:

any thoughts here...I want to try and start the correct meds ASAP!!!
thanks in advance!!!

anyone???