Crab 
To dream of a crab represents stubborn and determined aspects of your personality. You may possibly be too reliant on others and refuse to let go of a fruitless venture or dream. Crabs may also imply that you are feeling aggravated and frustrated.
Venereal Disease
To dream that you have venereal disease symbolizes an imbalance in your sexual desire and/or self-confidence. There may be an emotional or physical problem giving you anxiety over your sexual performance or self-esteem.
To dream that others have venereal disease indicates a fear of sex or a fear of becoming vulnerable to others.
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