There are many, many possible causes of sores on your penis, and diagnosis via the internet is not effective. Abstain from sex, don't use any creams without advice from a health care provider, and make an appointment for an exam as soon as possible. That said, here are some possibilities:
Sexually Transmitted Diseases
Herpes can cause small sores on the penis that come and go. They usually last 7-10 days, and are less than 2 mm in diameter. When they go and come back, they are usually in the same spot.
Syphilis can cause a painless, hard ulcer on the penis.
Chancroid can also cause sores on your penis, as might pubic lice.
Molluscum that are irritated or secondarily infected can cause sores.
Other infections
Some men may get sores on their penis from yeast; yeast is more likely to be a problem in men with immunocompromise, such as Diabetes.
Non-infectious skin conditions
Dermatitis from chemicals, plants like poison ivy, or Allergies may cause sores.
A fixed drug eruption, a kind of drug allergy, may look like a sore.
Eczema, psoriasis, and seborrheic dermatitis can cause sores.
Folliculitis, from shaving or other irritation or exposure, can cause bumps or sores.
A tick bite can cause a sore
Mechanical causes
Abrasion during sex or masturbation can cause sores
Sores on your back can be caused by bacteria or disease. Impetigo can cause these, as can a problem with acne that has spread to the back.
No, canker sores are abrasions inside your mouth and can be caused by biting your mouth, stress, drinking coffee etc. Cold sores (oral herpes) can be spread by someone else.
You can marry someone if you've got a 1 inch penis. A girl should marry you cause she loves you not for your penis size.
One possible cause is cigarettes. Seriously, I suggest researching the WebMD website. "Melanoma", a form of skincancer, is evidenced by black-colored sores on the skin.
Sores in mouth are caused by many different factors. Those caused by physical injuries such as canker sores, are not contagious. However, mouth sores caused by virus or bacteria could be contagious through kissing.
Ambien doesn't cause canker sores.
Pickles don't cause cold sores.
Almonds don't cause cold sores.
Herpes and syphilis are STDs that can cause sores on the mouth or genitals (or anywhere else).
Eating chili doesn't cause cold sores.
An asthma inhaler doesn't cause cold sores.
Unhealthy teeth doesn't cause you to have cold sores.
Yes stress DOES cause cold sores. I hope this answers your question.
I get canker sores from nuts. No other reaction but the pesky sores.
Yes. There is cream for cold sores though.
Getting a sun burn doesn't cause a cold sores but it can trigger break outs. The oral herpes virus is what causes cold sores.
No