This pain is likely a muscle strain from poor posture during long study sessions. For immediate relief, apply a warm compress or heating pad to the area for 15-20 minutes to relax the muscles. You can take over-the-counter ibuprofen (Advil) or acetaminophen (Tylenol) with food, or apply a topical pain relief gel like diclofenac (Voltaren). Moving forward, take 5-minute stretch breaks every hour, adjust your chair so your feet are flat on the floor, and keep your computer screen at eye level. If the pain persists for more than a week, radiates, or worsens, please see a doctor for an evaluation.