Both sides of penis under the skin are lumps like something has crystalized. Starts at base. Some larger than others. Causes it to be bent when erect?

Peyronies Disease. You have described peyronies disease. It is a scarring of the rods of the penis that causes pain, curvature and can progress to ed. Genetics, trauma and some medical problems play a role. Peyronies is more common in diabetics, who already have risk factors for ed. Unfortunately medical treatments have been disappointing. Surgical treatment is usually reserved for those unable to penetrate.
Bent Penis. Some men have a penis that curves to the side, upward or downward when erect. This is common, and a bent penis in most men isn't a problem. Generally, a bent penis is only a cause for concern if your erections are painful or if the curvature of your penis interferes with sex.