A melanoma under the toenail (called a subungual melanoma) can resemble the type of dark bruise that occurs when the nail has been injured. If you see a dark spot under your nail but there has been no injury to the toe, get it checked by a doctor right away. Other signs and symptoms of subungual melanoma include:  Brown or black streaks under the nail that may grow over time—particularly streaks that extend from the tip of the nail to the base of the nail bed A bruise or dark spot under the nail that does not move up or disappear as the nail grows Separation between the nail and nail bed Darkening of the skin around the nail Cracking, thinning, or warping of the nail Bleeding from under the nail If you suspect you have a melanoma under your toenail, don’t wait—make an appointment with your doctor right away. Melanoma is much easier to treat effectively if it is caught early.  Your doctor will likely order a biopsy, in which a small amount of tissue is taken from the nail bed and examined for cancerous cells. If the tissue tests positive for melanoma and your doctor suspects that the cancer has begun to spread, they may also perform a biopsy on some of the nearby lymph nodes. The best treatment for melanoma is to remove the cancerous tissue. Depending on how thick the melanoma is and how far it has spread, your doctor may recommend removing the entire nail or part of the affected toe.  If the melanoma has spread to the surrounding tissues or lymph nodes, it may be necessary to supplement surgery with chemotherapy or radiation therapy. Even if the extent of the melanoma is relatively limited, your doctor may still recommend additional therapies to prevent the melanoma from returning or to kill any remaining cancerous cells. Follow up regularly with your doctor after treatment and do routine self-checks in case the melanoma reoccurs.
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One-sentence summary -- Examine your nail for melanoma symptoms. See your doctor right away for a diagnosis. Have the melanoma surgically removed.

Article: To keep your vehicle moving smoothly, be sure to slow down well ahead of any speed bumps, turns, or stoplights that you approach. Engage the clutch to put the gear shift into the neutral position if you need to slow down to the point where you need to put the engine in a lower gear. Pay attention to road signs that will tell you when a speed bump or turn is coming up. If you’re in traffic that’s traveling at speeds up to about 10 miles (16 km) per hour, keep the engine in first gear so you can move forward steadily. The vehicle won’t move forward if it’s in the neutral gear.  Shift the vehicle into second gear when the traffic gets up to about 15 miles (24 km) per hour. Be sure to keep at least 1 car length in front of you in case you need to stop suddenly. If you’re moving too slow in 1st gear, the engine could stall. Engage the clutch, shift the gear shift into neutral, and release the clutch to keep the engine in neutral. Let the vehicle roll and use your breaks to slow it down or stop if you need to. Don’t put the engine into the neutral gear then coast while using your breaks to slow down or you could cause the vehicle to jerk or the gears to grind. Instead, shift back down through the successive gears until you’re in the gear that’s best suited to maintain the speed that traffic is moving in. Don’t skip gears. For instance, don’t shift from 4th gear straight to 2nd or it can cause the gears to grind and the vehicle to shake uncomfortably.
Question: What is a summary of what this article is about?
Slow down ahead of speed bumps and turns. Keep the vehicle in 1st gear in slow-moving traffic. Put the gear shift in the neutral position when traffic stops or slows to a crawl. Downshift while using the breaks to slow down from a higher gear.