<s>[INST] Hi. I have had head pains for the past year. They are pulse short pains that happen when I strain or laugh. They usually last 3 to 7 pulses and then are completly gone. Also the past three weeks I have had a pea sized knot right on my hair line around where the head pains are. I have a doctors appoint next week but I am so nervous. Does it sound very serious? [/INST] Hi, If I were your treating Doctor for this case of this head lump, I would come up with only one and one possibility that is a sebaceous cyst! Nothing to worry about this and try not to get infected there, and it has nothing to do with your headache! Headache is related to nerves, brain, blood pressure, emotion, coughs and migraine... I suggest you to go for an FNAC test of the lump for confirmation and to relieve your concerns! Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health. </s>