If the pimples are caused by clogged pores, then they will look like the ones mentioned below:

• Blackheads: pore gets blocked by oil and its reaction with air turns it black
• Whiteheads: develops in a similar fashion as blackheads but remains white.
• Papules or red bumps pain when they are touched.
• Pustules have a white tip in center which is caused by the build up of pus.
• Nodules or bumps that are present beneath the surface of skin, they are often painful

Ingrown hair, folliculitis (i.e. infected follicles around ingrown hair), heat rash and cysts can cause pimples as well.

There is also a harmless and temporary condition caused by a virus called Molluscum contagiosum, which look like a cluster of small raised and firm spots that form along crease. They go away by themselves.

And lastly, these pimples could also result from sexually transmitted diseases such as herpes, syphilis and/or pubic lice.

Go to a dermatologist first, on assessing they will direct you towards the right specialist - Dermatologists in India.