Sarcoids. Sarcoids are a benign tumour that grow on the skin of susceptible horses. While they do not spread to any other organ in the horseâs body, they can certainly spread throughout the skin.arcoids. Sarcoids are a benign tumour that grow on the skin of susceptible horses. While they do not spread to any other organ in the horseâs body, they can certainly spread throughout the skin.
List pyrithione zinc topical side effects by likelihood and severity. The following side effects are associated with pyrithione zinc topical: Common side effects of pyrithione zinc topical: Skin IrritationSevere.
Serious side effects have been reported with phenylephrine including the following: 1  worsening of chest pain or heart failure. 2  decreased heart rate. 3  hypersensitivity (severe allergic reaction). 4  chest pain. 5  swelling of the face, eyes, lips, tongue, arms, or legs. 6  difficulty breathing or swallowing. 7  rash.