3. Distribution
In terms of recognizing Molluscum Contagiosum over the presence of many other similar skin conditions, the distribution of the spots can be a telltale sign, a dead giveaway even.
Whereas a small proportion of sufferers will end up with just the one bump, appearing alone, the majority of people who develop the condition will see groups or clusters emerging, sometimes in rows. When this particular distribution is observed, along with some of the other signs for recognition detailed here, it’s a very educated guess to assume that a person is suffering from Molluscum Contagiosum, and so must take steps to avoid infecting anyone else.
Even when the diagnosis is uncertain, planning for the infection as if it were contagious is the best bet, as this means that in the eventuality that it is what you expect it to be, the risk of infecting others has already been managed. Plan for the worst and hope for the best.