Step 1: Understanding the Question:
The question asks which complaint is reported most often by people who use condoms for contraception.
Step 2: Key Formula or Approach:
A condom is a barrier device made of latex (or sometimes polyurethane). Its side effects are mostly local, tied to the material touching the skin, not systemic like a pill or an injection.
Step 3: Detailed Explanation:
Contact dermatitis, an allergic or irritant skin reaction to the latex rubber or to the lubricant and spermicide coating it, is well known and common, since the material stays against sensitive genital skin through the whole act.
Increased monilial (candida) infection of the vagina is linked more to factors like diabetes, antibiotic use, or tight synthetic clothing, not to condom use itself.
Premature ejaculation is a sexual complaint with its own separate causes; a few men report reduced sensation with a condom, but it is not the classic reported problem.
Retention of urine has no known link with condom use at all.
Step 4: Final Answer:
The most common problem with condom use is contact dermatitis, option (C).