Here's some more info relating to acne pointing towards OP's conclusions.

"Various studies have shown that in most cases bacterial agents are involved in causing acne, whereas, according to the results of this study, it can be suggested that the yeast Candida may be introduced as an agent in the etiology of this disease. Candida species isolates can also be resistant to common antifungal drugs and this could be one of several causes why sequential treatment of this disease is defeated."

"Of the 70 patients recruited for the present study 49 (70%) were female and the rest 21 (30%) were male. The majority (33, 47.14%) belonged to the age group of 15 to 20 years. There were 18 persons in the 20 to 25 years, 12 in 25 to 30 years, and 6 in 10 to 15 years age group and only 2 were above 30 year. Fifty-four of the participants were from urban area and the rest 16 were from rural background. A positive family history of acne was found in 46.4% of cases and 53.6% had no family history. In 37, the duration of the disease was less than 1 year; 20 had it for 1 to 5 years; for 11 it was 5 to 10 years and the rest 2 were suffering from the problem for a pretty long time. Forty one of the group had history of previous treatment while the rest 29 were naive patients."

"Based on the culture and other diagnostic tests for 70 samples, 12 colonies suspicious of Candida sp. were found. Using the sequencing method, finally 11 cases of Candida (15.71%) were identified. The following species were seen: Eight (72.73%) Candida parapsilosis, one (9.9%) Candida krusei, one (9.9%) Candida lusitaniae, one (9.9%) Candida kefyr. One colony suspicious of Candida was found to be Trichosporon asahii "

[link to www.ncbi.nlm.nih.gov (secure)]

So pretty much some sort of Candida was found on acne. 50% of participants had "genetic" acne and the other half acquired it.