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.
If you have symptoms of an STD, it's important to be tested. Some common symptoms of STDs include sores on the genitals, discharge from the penis or vagina, itching, and burning during urination.But remember, many infections often do not cause any symptoms.f you have symptoms of an STD, it's important to be tested. Some common symptoms of STDs include sores on the genitals, discharge from the penis or vagina, itching, and burning during urination.