We don't have synonyms for petechia yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are gelechia, petechial and petechiae.
(n) :
a small spot, especially on an organ, caused by bleeding underneath the skin
"1973: It is scurvy. All my authorities agree - weakness, diffused muscular pain, petechia, tender gums, ill breath - and M'Alister has no doubt of it. -- Patrick O'Brian, HMS Surprise"
(n) :
a small spot, especially on an organ, caused by bleeding underneath the skin
"1973: It is scurvy. All my authorities agree - weakness, diffused muscular pain, petechia, tender gums, ill breath - and M'Alister has no doubt of it. -- Patrick O'Brian, HMS Surprise"