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.
Yellow Discharge During Pregnancy â Why, What & How. Although it can be concerning to see, light vaginal discharge is completely normal. Normally, discharge is white or clear in color and creamy or stringy (like egg whites) in texture. But when mucus takes on strange colors or emits foul odors, itâs usually a cause for concern. Yellow discharge and orange discharge can be alarming to see, but it may or may not be the sign of a serious medical issue.