Colic

Colic is intense, inconsolable crying in an otherwise healthy infant for no apparent reason. It’s typically diagnosed using the "Rule of 3's": crying for more than three hours a day, at least three days a week, for three or more weeks. While exhausting for parents, it is harmless and usually resolves by 3 to 4 months of age.
Key Signs

• Predictable Timing: Episodes often occur in the late afternoon or evening.
  
• Intense Distress: The crying sounds like screaming or pain and is resistant to soothing.
  
• Physical Tension: Babies may clench their fists, arch their backs, pass gas, or pull their legs toward their bellies.
  

Potential CausesWhile the exact cause is unknown, factors may include an underdeveloped digestive system, food sensitivities (such as cow’s milk protein), or an immature nervous system. 
Effective Soothing Techniques

• Movement & Touch: Try rocking, swaying, skin-to-skin contact, or a car ride.
  
• Physical Relief: Gentle clockwise stomach massages, frequent burping, and holding the baby upright can ease gas discomfort.
  

Other things to try to help baby

• Gripe water
  
• Infant drops for gas such as Baby Mylicon
  
• Dietary changes if breastfeeding.  If the food causes gas in Mom, it may in baby as well.  Sometimes stopping dairy can help too. 
  
• Chiropractic care for baby
  

Sources: 
https://my.clevelandclinic.org/health/diseases/10823-colic
https://www.mayoclinic.org/diseases-conditions/colic/diagnosis-treatment/drc-20371081
https://americanpregnancy.org/postpartum/colic/