Ringworm

Ringworm was a trans-species infection of the skin that caused the presence of round, ringlike rashes. The term "ringworm" was a misnomer, since the condition was caused by various species of fungi, and not parasitic worms. The condition, though highly infectious, was mild, easily treatable, and generally considered by the galactic community to be a nuisance.

Gunnery Sergeant Tuffass, a Marine drill instructor, nicknamed one of his  recruits "Ringworm," due to the wormlike appearance of the young female's. The was not aware that ringworm was actually a fungal infection.

Appearances

 * Tales from the Corps, Vol. 1