When the solid has a high affinity for water - in which case it is called hydrophilic (high energy e.g. glass)- water spreads. In the opposite case of hydrophobic (low energy e.g. teflon) surfaces, water does not spread but, instead, forms at equilibrium a spherical cap resting on the substrate with a 'contact angle'.
Infections such as trichomoniasis, gonorrhea, and Chlamydia (all STDs); and yeast infection can all cause vaginal discharge. Vaginal discharge can be associated with other symptoms such as burning or itching. Antibiotics are given for infections that cause vaginal discharge.
Common STD Symptoms in Men: 1  No symptoms. 2  Blisters on or around penis. 3  Spots, bumps or lesions on the penis.  Discharge (clear, white, or 1  yellow) Oozing from the tip of the penis (thick or thin)  Painful 1  urination. Painful ejaculation.  Itching on the tip of the 1  penis. Rash on the penis, testicles, or  groin.