A guitar amplifier (or guitar amp) is an electronic amplifier that amplifies the electrical signal from a pickup on an electric guitar, bass guitar, or acoustic guitar so that it can produce sound through a loudspeaker, which is typically housed in a wooden cabinet.
WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms headache, pain or discomfort and watery eyes including Acute sinusitis, Nearsightedness, and Chronic sinusitis. There are 86 conditions associated with headache, pain or discomfort and watery eyes. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.
The commonest cause of red eye, grittiness and discharge is conjunctivitis. Vision should be normal although the excessive secretions may cause slight blurring. Conjunctivitis can be infective (viral or bacterial) or allergic (hay fever season).