The pH scale indicates acidity or alkalinity. A soil with a pH number below 7 is acid, while one with a pH above 7 is alkaline. Garden plants typically grow best in neutral or slightly acid soil (pH 7 or slightly below; see illustration at left). Most won't thrive in highly acid or highly alkaline soil, though a few have adapted to such extremes. In general, some nutrients cannot be efficiently absorbed by plant roots if soil pH is too high.
Symptoms of ITB syndrome consist of pain on the outside of the knee, more specifically at or around the lateral epicondyle of the femur or bony bit on the outside of the knee. It comes on at a certain time into a run and gradually gets worse until often the runner has to stop.
But in the case of hay fever, symptoms usually appear when a person encounters an allergen, such as pollen or mold. Symptoms include itchy eyes, itchy nose, itchy throat, itchy ears, sneezing, irritability, nasal congestion and hoarseness. People may also experience cough, postnasal drip, sinus pressure or headaches, decreased sense of smell, snoring, sleep apnea, fatigue and asthma, Josephson said.