symptom

(correct) Same-ON + (sick)
★★★☆☆
10 strokes
BETA

Onyomi

SHOU

Mnemonic

You're SHOWING symptoms of the sickness, so you're correct to say you have it!

Jukugo

XXX症(XXXしょう)

XXX - disease ★★★☆☆ SUF

SUFFIX meaning XXX-disease. Only used in the proper names of specific diseases, in contrast to 病気(びょうき), which means sick in general.

花粉症(かふんしょう)

hay fever ★★☆☆☆
(flower) + (powder) + (symptom) = 花粉症 (hay fever)

XXX 恐怖症(きょうふしょう)

xxx- phobia ★☆☆☆☆ SUF
(super duper terror) + (symptom) = 恐怖症 (xxx- phobia)

症状(しょうじょう)

symptom ☆☆☆☆☆
(symptom) + (circumstance) = 症状 (symptom)

symptom of a disease

Synonyms

swell
腫れる    膨らむ    炎症   
syndrome vs. symptom!
症状    症候群